staging: rtl8192u: Fix potential infinite loop

The for-loop iterates with a u8 loop counter i and compares this
with the loop upper limit of riv->ieee80211->LinkDetectInfo.SlotNum
that is a u16 type. There is a potential infinite loop if SlotNum
is larger than the u8 loop counter. Fix this by making the loop
counter the same type as SlotNum.

Addresses-Coverity: ("Infinite loop")
Fixes: 8fc8598e61f6 ("Staging: Added Realtek rtl8192u driver to staging")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210407150308.496623-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove unnecessary parentheses

fix following post-commit checkpatch issue:

CHECK: Unnecessary parentheses around
'padapter->securitypriv.dot11AuthAlgrthm == dot11AuthAlgrthm_8021X'
84: FILE: drivers/staging/rtl8723bs/core/rtw_pwrctrl.c:335:
+ if ((padapter->securitypriv.dot11AuthAlgrthm
== dot11AuthAlgrthm_8021X) &&
+     !(padapter->securitypriv.binstallGrpkey))

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/a45ec5059ea315db6509989f320340c1816068c5.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: split long lines

fix following post-commit checkpatch hooks:

WARNING: line length of 110 exceeds 100 columns
266: FILE: drivers/staging/rtl8723bs/core/rtw_mlme_ext.c:623:
+ pmlmepriv->cur_network.join_res) || check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE))
--
WARNING: line length of 102 exceeds 100 columns
468: FILE: drivers/staging/rtl8723bs/core/rtw_mlme_ext.c:5234:
+ if (tx_chk != _SUCCESS && pmlmeinfo->link_count++ == link_count_limit)
--
WARNING: line length of 124 exceeds 100 columns
543: FILE: drivers/staging/rtl8723bs/core/rtw_pwrctrl.c:335:
+ if ((padapter->securitypriv.dot11AuthAlgrthm == dot11AuthAlgrthm_8021X) && !(padapter->securitypriv.binstallGrpkey))
--
WARNING: line length of 112 exceeds 100 columns
828: FILE: drivers/staging/rtl8723bs/core/rtw_wlan_util.c:1061:
+ if (TEST_FLAG(phtpriv->stbc_cap, STBC_HT_ENABLE_TX) && GET_HT_CAPABILITY_ELE_TX_STBC(pIE->data))
--
WARNING: line length of 113 exceeds 100 columns
836: FILE: drivers/staging/rtl8723bs/core/rtw_wlan_util.c:1067:
+ if (TEST_FLAG(phtpriv->ldpc_cap, LDPC_HT_ENABLE_TX) && GET_HT_CAPABILITY_ELE_LDPC_CAP(pIE->data))
--
WARNING: line length of 112 exceeds 100 columns
844: FILE: drivers/staging/rtl8723bs/core/rtw_wlan_util.c:1073:
+ if (TEST_FLAG(phtpriv->stbc_cap, STBC_HT_ENABLE_TX) && GET_HT_CAPABILITY_ELE_RX_STBC(pIE->data))
--
WARNING: line length of 125 exceeds 100 columns
883: FILE: drivers/staging/rtl8723bs/core/rtw_wlan_util.c:1282:
+ rtw_get_ie(bssid->IEs + _FIXED_IE_LENGTH_, WLAN_EID_HT_OPERATION, &len, bssid->IELength - _FIXED_IE_LENGTH_);
--
WARNING: line length of 101 exceeds 100 columns
904: FILE: drivers/staging/rtl8723bs/core/rtw_wlan_util.c:1305:
+ if (bssid->Ssid.Ssid[0] != '\0' && bssid->Ssid.SsidLength != 0) /* not hidden ssid */
--
WARNING: line length of 129 exceeds 100 columns
953: FILE: drivers/staging/rtl8723bs/core/rtw_wlan_util.c:1345:
+ if (pairwise_cipher != cur_network->BcnInfo.pairwise_cipher || group_cipher != cur_network->BcnInfo.group_cipher)
--
WARNING: line length of 113 exceeds 100 columns
1712: FILE: drivers/staging/rtl8723bs/os_dep/ioctl_linux.c:2651:

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/814139162ef516bb07bb50876578b032573271ac.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: fix comparison in if condition

fix following post-commit checkpatch issue:

WARNING: Comparisons should place the constant on the right side of the test
1833: FILE: drivers/staging/rtl8723bs/os_dep/mlme_linux.c:151:
+ if (NULL == buff)

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/b32610045cad3c385b236266d7a10665ed202150.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove unnecessary parentheses

fix following post-commit checkpatch issue:

CHECK: Unnecessary parentheses around 'prxattrib->bdecrypted'
125: FILE: drivers/staging/rtl8723bs/core/rtw_recv.c:365:
+ if ((prxattrib->bdecrypted) && (brpt_micerror))

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/1453eec49833fc940e134fc14bc65d218ace0663.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: rewrite comparison to null

fi following post-commit checkpatch issues:

CHECK: Comparison to NULL could be written "!p"
290: FILE: drivers/staging/rtl8723bs/core/rtw_mlme_ext.c:978:
+ if (p == NULL)
--
CHECK: Comparison to NULL could be written "!pmgntframe"
328: FILE: drivers/staging/rtl8723bs/core/rtw_mlme_ext.c:2016:
+ if (pmgntframe == NULL)
--
CHECK: Comparison to NULL could be written "!pmgntframe"
361: FILE: drivers/staging/rtl8723bs/core/rtw_mlme_ext.c:2378:
+ if (pmgntframe == NULL)
--
CHECK: Comparison to NULL could be written "!pmgntframe"
391: FILE: drivers/staging/rtl8723bs/core/rtw_mlme_ext.c:3478:
+ if (pmgntframe == NULL)
--
CHECK: Comparison to NULL could be written "!p"
427: FILE: drivers/staging/rtl8723bs/core/rtw_mlme_ext.c:4071:
+ if (p == NULL)
--
CHECK: Comparison to NULL could be written "!BIP_AAD"
781: FILE: drivers/staging/rtl8723bs/core/rtw_security.c:1690:
+ if (BIP_AAD == NULL)
--
CHECK: Comparison to NULL could be written "!pwep"
1773: FILE: drivers/staging/rtl8723bs/os_dep/ioctl_linux.c:3062:
+ if (pwep == NULL)
--
CHECK: Comparison to NULL could be written "!pmlmepriv->wps_beacon_ie"
1784: FILE: drivers/staging/rtl8723bs/os_dep/ioctl_linux.c:3510:
+ if (pmlmepriv->wps_beacon_ie == NULL)
--
CHECK: Comparison to NULL could be written "!pmlmepriv->wps_probe_resp_ie"
1795: FILE: drivers/staging/rtl8723bs/os_dep/ioctl_linux.c:3544:
+ if (pmlmepriv->wps_probe_resp_ie == NULL)
--
CHECK: Comparison to NULL could be written "!pmlmepriv->wps_assoc_resp_ie"
1807: FILE: drivers/staging/rtl8723bs/os_dep/ioctl_linux.c:3574:
+ if (pmlmepriv->wps_assoc_resp_ie == NULL)
--
CHECK: Comparison to NULL could be written "!pbuf"
1818: FILE: drivers/staging/rtl8723bs/os_dep/ioctl_linux.c:3928:
+ if (pbuf == NULL)
--
CHECK: Comparison to NULL could be written "!if1"
1944: FILE: drivers/staging/rtl8723bs/os_dep/sdio_intf.c:392:
+ if (if1 == NULL)

CHECK: Using comparison to false is error prone
402: FILE: drivers/staging/rtl8723bs/core/rtw_mlme_ext.c:3890:
+ if (false == bxmitok)
--
CHECK: Using comparison to true is error prone
671: FILE: drivers/staging/rtl8723bs/core/rtw_recv.c:365:
+ if ((prxattrib->bdecrypted == true) && (brpt_micerror == true))
--
CHECK: Using comparison to true is error prone
1051: FILE: drivers/staging/rtl8723bs/core/rtw_xmit.c:1174:
+ if (padapter->securitypriv.binstallBIPkey != true)
--
CHECK: Using comparison to false is error prone
1632: FILE: drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:2194:
+ if (false == bMatched)

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/572f96dcb6217fd3e6ea23c37b55b0ebb3231f14.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: add spaces around operators

fix the following post-commit checkpatch issues:

CHECK: spaces preferred around that '|' (ctx:VxV)
187: FILE: drivers/staging/rtl8723bs/core/rtw_mlme.c:1659:
+ if (check_fwstate(pmlmepriv, _FW_UNDER_SURVEY|_FW_UNDER_LINKING) == true)
--
CHECK: spaces preferred around that '|' (ctx:VxV)
373: FILE: drivers/staging/rtl8723bs/core/rtw_mlme_ext.c:3023:
+ == (sta_bssrate[j]|IEEE80211_BASIC_RATE_MASK))
--
CHECK: spaces preferred around that '-' (ctx:VxV)
456: FILE: drivers/staging/rtl8723bs/core/rtw_mlme_ext.c:4098:
+ if (len > (NDIS_802_11_LENGTH_RATES_EX-i))
--
CHECK: spaces preferred around that '+' (ctx:VxV)
770: FILE: drivers/staging/rtl8723bs/core/rtw_security.c:1590:
+ if (pframe[hdrlen+8+plen-8+i] != message[hdrlen+8+plen-8+i])
--
CHECK: spaces preferred around that '+' (ctx:VxV)
770: FILE: drivers/staging/rtl8723bs/core/rtw_security.c:1590:
+ if (pframe[hdrlen+8+plen-8+i] != message[hdrlen+8+plen-8+i])
--
CHECK: spaces preferred around that '-' (ctx:VxV)
770: FILE: drivers/staging/rtl8723bs/core/rtw_security.c:1590:
+ if (pframe[hdrlen+8+plen-8+i] != message[hdrlen+8+plen-8+i])
--
CHECK: spaces preferred around that '+' (ctx:VxV)
770: FILE: drivers/staging/rtl8723bs/core/rtw_security.c:1590:
+ if (pframe[hdrlen+8+plen-8+i] != message[hdrlen+8+plen-8+i])
--
CHECK: spaces preferred around that '+' (ctx:VxV)
770: FILE: drivers/staging/rtl8723bs/core/rtw_security.c:1590:
+ if (pframe[hdrlen+8+plen-8+i] != message[hdrlen+8+plen-8+i])
--
CHECK: spaces preferred around that '+' (ctx:VxV)
770: FILE: drivers/staging/rtl8723bs/core/rtw_security.c:1590:
+ if (pframe[hdrlen+8+plen-8+i] != message[hdrlen+8+plen-8+i])
--
CHECK: spaces preferred around that '-' (ctx:VxV)
770: FILE: drivers/staging/rtl8723bs/core/rtw_security.c:1590:
+ if (pframe[hdrlen+8+plen-8+i] != message[hdrlen+8+plen-8+i])
--
CHECK: spaces preferred around that '+' (ctx:VxV)
770: FILE: drivers/staging/rtl8723bs/core/rtw_security.c:1590:
+ if (pframe[hdrlen+8+plen-8+i] != message[hdrlen+8+plen-8+i])
--
CHECK: spaces preferred around that '-' (ctx:VxV)
1001: FILE: drivers/staging/rtl8723bs/core/rtw_wlan_util.c:1849:
+ if (i > (NUM_STA-1))
--
CHECK: spaces preferred around that '&' (ctx:VxV)
1647: FILE: drivers/staging/rtl8723bs/os_dep/ioctl_linux.c:211:
+ if (mcs_rate&0x8000) /* MCS15 */

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/28885311d4351d4df4508a50765a9b92a2b8da77.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove unnecessary parentheses in if condition

fix following post-commit hook checkpatch issue:

CHECK: Unnecessary parentheses around pcmdpriv->cmd_queue.queue
85: FILE: drivers/staging/rtl8723bs/core/rtw_cmd.c:422:
+ if (list_empty(&(pcmdpriv->cmd_queue.queue)))

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/3f5cf6b7b9aa5a0fa09b71278fdc361e9f113c41.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove unnecessary bracks on DBG_871X removal sites

remove unnecessary bracks on DBG_871X removal sites

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/35f5edf0f39b717b3de3ad7861cbaa5f4ba60576.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove empty #ifdef blocks after DBG_871X removal

remove #ifdef and blocks #if defined() blocks left empty
after DBG_871X removal.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/4e19eb1c71bc1d43d30c1b0a04851ab7ce528f36.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove empty tracing function dump_rx_packet

remove tracing function dump_rx_packet after DBG_871X removal.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/281afbaecdb9614c91e648b3a6fc2738a176e57a.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove empty for cycles left by DBG_871X removal

remove empty for cycles and unused counter variables to suppress
compiler warnings.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/fe758f88ef6d6eaad9762d16d78dcfa876fcf654.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: put constant on the right side in if condition

fix the following post-commit hook checkpatch warning:

WARNING: Comparisons should place the constant on the right side of the test
683: FILE: drivers/staging/rtl8723bs/os_dep/ioctl_linux.c:2204:
+ if (_SUCCESS != rtw_set_chplan_cmd(padapter, channel_plan_req, 1, 1))

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/41c98d13d5c74b1329ae125f097b780745cf8246.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers: rtl8723bs: rewrite comparison to null

fix following post-commit hook checkpatch warnings:

CHECK: Comparison to NULL could be written "!psta"
97: FILE: drivers/staging/rtl8723bs/core/rtw_ap.c:2115:
+ if (psta == NULL)

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/0c6d53c851d1b07eb0183108e0bad7b4f273f04b.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove all if-else empty blocks left by DBG_871X removal

remove all if-else empty {} blocks left by spatch application.

removed unused variables and an unused static function definition
after if-else blocks removal, to suppress compiler warnings.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/56055b20bc064d7ac1e8f14bd1ed42aba6b02c36.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove DBG_871X macro definitions

remove DBG_781X macro definitions.

Remove all of the DBG_871X logs as they
currently do nothing as they require the code to be modified by
hand in order to be turned on. This obviously has not happened
since the code was merged, so just remove them as they are unused.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/53632cddb1da639c84fa52c2818904b0e1298a6e.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove commented out DBG_871X logs

remove all commented out DBG_871X logs unmatched by
semantic patch.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/125e216e3bb5bc938e06b15dadfbbf51d9517dde.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove DBG_871CX log unmatched by cocci

Remove a DBG_871X log untouched by cocci, maybe due
to the presence of a trailing \, for it is inside a
macro definition.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/740bf0eeef550de36e772bdf7d051499627773e5.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove all DBG_871X logs

Remove all of the DBG_871X logs as they
currently do nothing as they require the code to be modified by
hand in order to be turned on. This obviously has not happened
since the code was merged, so just remove them as they are unused.

applied the following semantic patch script:

@@
expression a, b, c, d, e, f, g, h, i, j, k;
constant B, C, D, E;
@@

(
- DBG_871X(a);
|
- DBG_871X(a, b);
|
- DBG_871X(a, B);
|
- DBG_871X(a, b, c);
|
- DBG_871X(a, B, c);
|
- DBG_871X(a, b, C);
|
- DBG_871X(a, B, C);
|
- DBG_871X(a, b, c, d);
|
- DBG_871X(a, B, c, d);
|
- DBG_871X(a, b, C, d);
|
- DBG_871X(a, b, c, D);
|
- DBG_871X(a, B, C, d);
|
- DBG_871X(a, B, c, D);
|
- DBG_871X(a, b, C, D);
|
- DBG_871X(a, B, C, D);
|
- DBG_871X(a, b, c, d, e);
|
- DBG_871X(a, B, c, d, e);
|
- DBG_871X(a, b, C, d, e);
|
- DBG_871X(a, b, c, D, e);
|
- DBG_871X(a, b, c, d, E);
|
- DBG_871X(a, B, C, d, e);
|
- DBG_871X(a, B, c, D, e);
|
- DBG_871X(a, B, c, d, E);
|
- DBG_871X(a, b, C, D, e);
|
- DBG_871X(a, b, C, d, E);
|
- DBG_871X(a, b, c, D, E);
|
- DBG_871X(a, B, C, D, e);
|
- DBG_871X(a, B, C, d, E);
|
- DBG_871X(a, B, c, D, E);
|
- DBG_871X(a, b, C, D, E);
|
- DBG_871X(a, B, C, D, E);
|
- DBG_871X(a, b, c, d, e, f);
|
- DBG_871X(a, b, c, d, e, f, g);
|
- DBG_871X(a, b, c, d, e, f, g, h);
|
- DBG_871X(a, b, c, d, e, f, g, h, i);
|
- DBG_871X(a, b, c, d, e, f, g, h, i, j);
|
- DBG_871X(a, b, c, d, e, f, g, h, i, j, k);
)

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/89a39f551107ba73b44dd2422765cf8ce371501a.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove DBG_871X log argument

This patch prepares the application of the semantic
patch aimed to remove all DBG_871X logs.

One occurrence of the DBG_871X macro has one
repeated argument, that's not even comma separated
value with the previous one nor a format string
parameter associated.

In normal conditions this worked, for the macro
is usually not expanded (the do nothing behaviour),
but if I try to apply the sempantic patch to remove
all macro occurrences, all macros call after that
abnormal declaration are left untouched (not removed).

Remove all of the DBG_871X logs as they currently
do nothing as they require the code to be modified by
hand in order to be turned on. This obviously has not happened
since the code was merged, so just remove them as they are unused.

Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/3473925ae9ee5a3bcd0ab86613dbce80b6d3f33f.1617802415.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: tests: Correct unittest_fptr

The definition of the `unittest_fptr` function pointer type has the
wrong function return type `void *` instead of `void`.  The problem is
hidden by a bunch of unnecessary type-casts.  Fix the type definition
and remove the type-casts.

Cc: Spencer E. Olson <olsonse@umich.edu>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://lore.kernel.org/r/20210407140142.447250-6-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: tests: ni_routes_test: Lines should not end with a '('

Fix checkpatch.pl issues such as the following:

CHECK: Lines should not end with a '('
+ unittest(

Cc: Spencer E. Olson <olsonse@umich.edu>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://lore.kernel.org/r/20210407140142.447250-5-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: tests: ni_routes_test: Avoid CamelCase: <RVi>

Rename the `RVi` macro to `RVI` to avoid this checkpatch.pl issue:

CHECK: #27: FILE: drivers/staging/comedi/drivers/tests/ni_routes_test.c:27:
+#define RVi(table, src, dest) ((table)[(dest) * NI_NUM_NAMES + (src)])

Cc: Spencer E. Olson <olsonse@umich.edu>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://lore.kernel.org/r/20210407140142.447250-4-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: tests: ni_routes_test: Put complex values in parentheses

Fix checkpatch.pl errors such as:

ERROR: Macros with complex values should be enclosed in parentheses
+#define I1(x1) \
+ (int[]){ \
+ x1, 0 \
+ }

Also, wrap that `x1` in parentheses.

Cc: Spencer E. Olson <olsonse@umich.edu>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://lore.kernel.org/r/20210407140142.447250-3-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: tests: ni_routes_test: Fix compilation error

The `ni_routes_test` module is not currently selectable using the
Kconfig files, but can be built by specifying `CONFIG_COMEDI_TESTS=m` on
the "make" command line.  It currently fails to compile due to an extra
parameter added to the `ni_assign_device_routes` function by
commit e3b7ce73c578 ("staging: comedi: ni_routes: Allow alternate board
name for routes").  Fix it by supplying the value `NULL` for the added
`alt_board_name` parameter (which specifies that there is no alternate
board name).

Fixes: e3b7ce73c578 ("staging: comedi: ni_routes: Allow alternate board name for routes")
Cc: Spencer E. Olson <olsonse@umich.edu>
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://lore.kernel.org/r/20210407140142.447250-2-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: comedi: drivers: Fix spelling mistake "nubmer" -> "number"

There is a spelling mistake in a comment. Fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210407111301.486853-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: hal: Remove camelcase

Remove camelcase. Issue detected by checkpatch.pl. The symbols aren't
used in other files, so this change doesn't break the driver's code.

Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Link: https://lore.kernel.org/r/20210407100410.8058-1-fmdefrancesco@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: remove an obsolete comment

This driver does not set URB_ZERO_PACKET.

The rtl8188eu driver that's available from Realtek/Edimax has some
commented-out code that sets zero packet. It was removed from this
driver before it was imported.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210406204829.18130-11-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: clean up usb_write32

Remove unnecessary variable, summarize declaration and assignment.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210406204829.18130-10-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: clean up usb_write16

Remove unnecessary variable, summarize declaration and assignment.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210406204829.18130-9-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: clean up usb_write8

Remove unnecessary variable, summarize declaration and assignment.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210406204829.18130-8-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: clean up usb_read32

Remove unnecessary variable, summarize declaration and assignment.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210406204829.18130-7-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: clean up usb_read16

Remove unnecessary variable, summarize declaration and assignment.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210406204829.18130-6-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: clean up usb_read8

Remove unnecessary variable, summarize declaration and assignment.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210406204829.18130-5-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: use actual request type as parameter

At the moment, usbctrl_vendorreq's requesttype parameter must be set to 1
for reading and 0 for writing. It's then converted to the actual
bmRequestType for the USB control request. We can simplify the code and
avoid this conversion if the caller passes the actual bmRequestType.

We already have defines for the read and write request types. Move them to
usb_ops_linux.c, they're used only inside this file. Replace the numeric
values with USB constants to make their meaning clearer.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210406204829.18130-4-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: ctrl vendor req index is not used

The index for rtl8188eu's vendor-specific control requests is not used.
Remove the index parameter from usbctrl_vendorreq and pass index 0 to
usb_control_msg.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210406204829.18130-3-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: ctrl vendor req value is always 0x05

The bRequest value for the vendor specific control requests sent by this
driver is always 0x05. Replace the function parameter with a define. Use
the same define as the rtlwifi driver.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210406204829.18130-2-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8188eu: remove unused efuse hal components

struct hal_data_8188e contains some components related to efuses which
are not used for rtl8188eu.

Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20210406204829.18130-1-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rt8192u: change constants to be on right

When comparing a constant with variable, it is recommeneded
to have the constant on the right side of the test.

This patch silences the following checkpatch.pl warning:
 "Comparisons should place the constant on the right side of the test"

Signed-off-by: Vardhan H G <crazylonestar7@gmail.com>
Link: https://lore.kernel.org/r/20210407061749.13460-1-crazylonestar7@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8192u: remove unused variable

Fix the following gcc warning:

drivers/staging/rtl8192u/r8192U_core.c:3419:6: warning: variable
‘reset_status’ set but not used [-Wunused-but-set-variable].

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/1617775650-42645-1-git-send-email-jiapeng.chong@linux.alibaba.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8192e: rtl8192E_dev: remove unused variable

Fix the following gcc warning:

drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c:693:15: warning: variable
‘tmpRegC’ set but not used [-Wunused-but-set-variable].

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Link: https://lore.kernel.org/r/1617767558-114050-1-git-send-email-jiapeng.chong@linux.alibaba.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8712: Use constants from <linux/ieee80211.h>

Some constants defined in wifi.h are already defined in <linux/ieee80211.h>
with some other (but similar) names.
Be consistent and use the ones from <linux/ieee80211.h>.

The conversions made are:
_SSID_IE_                -->  WLAN_EID_SSID
_SUPPORTEDRATES_IE_      -->  WLAN_EID_SUPP_RATES
_DSSET_IE_               -->  WLAN_EID_DS_PARAMS
_IBSS_PARA_IE_           -->  WLAN_EID_IBSS_PARAMS
_ERPINFO_IE_             -->  WLAN_EID_ERP_INFO
_EXT_SUPPORTEDRATES_IE_  -->  WLAN_EID_EXT_SUPP_RATES

_HT_CAPABILITY_IE_       -->  WLAN_EID_HT_CAPABILITY
_HT_EXTRA_INFO_IE_       -->  WLAN_EID_HT_OPERATION    (not used)
_HT_ADD_INFO_IE_         -->  WLAN_EID_HT_OPERATION

_VENDOR_SPECIFIC_IE_     -->  WLAN_EID_VENDOR_SPECIFIC

_RESERVED47_             --> (not used)

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/fe35fb45323adc3a30f31b7280cec7700fd325d8.1617741313.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: core: Move constants to the right of comparison

Move constant variables to the right side of comparisons to increase
consistency with Linux kernel code base.
Reported by checkpatch.

Signed-off-by: Zhansaya Bagdauletkyzy <zhansayabagdaulet@gmail.com>
Link: https://lore.kernel.org/r/20210406161131.GA103324@zhans
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: hal: Add spaces around operator in HalBtc8723b1Ant.h

Added spaces around operators in file HalBtc8723b1Ant.h. Issue detected
by checkpatch.pl. Spaces are preferred to improve readibility.

Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Link: https://lore.kernel.org/r/20210406164001.13646-1-fmdefrancesco@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: hal: Add spaces around operators in HalBtc8723b2Ant.c

Added spaces around operators in file HalBtc8723b2Ant.c. Issue detected
by checkpatch.pl. Spaces are preferred to improve readibility.

Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Link: https://lore.kernel.org/r/20210406170011.20753-1-fmdefrancesco@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: hal: Add spaces around operators in hal_btcoex.c

Added spaces around operators. Issue detected by checkpatch.pl.
Spaces around operators are preferred to improve readibility.

Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Link: https://lore.kernel.org/r/20210406181428.15097-1-fmdefrancesco@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: core: reorganize characters so the lines are under 100 ch

Cleans up warnings of "line over 100 characters" but avoiding
more than 90 characters in file rtw_ap.c

Signed-off-by: Beatriz Martins de Carvalho <martinsdecarvalhobeatriz@gmail.com>
Link: https://lore.kernel.org/r/20210406155815.90271-1-martinsdecarvalhobeatriz@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: hal: Add spaces around operators

Added spaces around operators in file HalBtc8723b1Ant.c. Issue detected
by checkpatch.pl. Spaces are preferred to improve readibility.

Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Link: https://lore.kernel.org/r/20210406154635.23191-1-fmdefrancesco@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge tag 'iio-for-5.13b-take2' of https://git./linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

2nd set of IIO features, cleanups etc for 5.13

Trying again as a wrong fixes tag managed to beat the checking script
I was running.

A few of these are fixes for major rework earlier in cycle.
Bulk of patches are the ad7150 pre graduation cleanup, some link
fixes in maintainers and set using the new IRQF_NO_AUTOEN flag.

Note includes a merge of a tag from tip to get the IRQF_NO_AUTOEN
support (one patch only from Barry Song)

Staging graduation
* adi,ad7150 CDC
  - A lot of precursor patches cleaning it up first.
  - Includes core support for timeout event ABI where after a time
    a adaptive threshold jumps to fix slow tracking problems.

Cleanups and minor / late breaking fixes
* core
  - Use sysfs_emit() and sysfs_emit_at() as appropriate
  - Fix a bug introduced in this cycle for iio_read_channel_processed_scale()
  - Fix handling of getfd ioctl as IIO_IOCTL_UNHANDLED is a valid ioctl number
  - Tidy up some pointless type conversion in string formatting and odd
    indentation.
* dac
  - Use sysfs_emit() for powerdown attribute show() functions.
* docs
  - Fix dead links due to txt to yaml binding conversions.
* treewide
  - Use IRQF_NO_AUTOEN
* various
  - Typo fixes in comments.
* triggers/hr-timer-trigger
  - Fix an overflow handing issue.
* ad,ad7923
  - Device managed functions in probe()
* ad,ad9467
  - Fix kconfig dependency issue
* adi,adis16201
  - Fix a wrong axis assignment that stops the driver loading.
* invensense,mpu6050
  - Allow use as a standalone trigger (no channels enabled)
  - Drop unnecessary manual assignment of indio_dev->modes
  - Make device function in a basic way if no interrupt wired.
  - Sanity check scale writes.
* semtech,sx9310
  - Fix access to a variable length array in DT binding.
  - Sanity check input before writing debounce register.
* st,stm32-dfsdm
  - Drop __func__ from dev_dbg() and pr_debug().
* yamaha,yas530
  - Include asm/unaligned.h instead of be_byteshift.h
  - Fix an issue with return value on an error path.

* tag 'iio-for-5.13b-take2' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (76 commits)
  iio: inv_mpu6050: Fully validate gyro and accel scale writes
  iio: sx9310: Fix write_.._debounce()
  iio: sx9310: Fix access to variable DT array
  iio: adc: Kconfig: make AD9467 depend on ADI_AXI_ADC symbol
  iio: magnetometer: yas530: Include right header
  iio: magnetometer: yas530: Fix return value on error path
  iio:cdc:ad7150: Fix use of uninitialized ret
  iio: hrtimer-trigger: Fix potential integer overflow in iio_hrtimer_store_sampling_frequency
  iio:adc: Fix trivial typo
  iio:adc:ad7476: Fix remove handling
  iio:adc:ad_sigma_delta: Use IRQF_NO_AUTOEN rather than request and disable
  iio:imu:adis: Use IRQF_NO_AUTOEN instead of irq request then disable
  iio:chemical:scd30: Use IRQF_NO_AUTOEN to avoid irq request then disable
  iio:adc:sun4i-gpadc: Use new IRQF_NO_AUTOEN flag instead of request then disable
  iio:adc:nau7802: Use IRQF_NO_AUTOEN instead of request then disable
  iio:adc:exynos-adc: Use new IRQF_NO_AUTOEN flag rather than separate irq_disable()
  iio:adc:ad7766: Use new IRQF_NO_AUTOEN to reduce boilerplate
  iio: buffer: use sysfs_attr_init() on allocated attrs
  iio: trigger: Fix strange (ladder-type) indentation
  iio: trigger: Replace explicit casting and wrong specifier with proper one
  ...

iio: inv_mpu6050: Fully validate gyro and accel scale writes

When setting the gyro or accelerometer scale the inv_mpu6050 driver ignores
the integer part of the value. As a result e.g. all of 0.13309, 1.13309,
12345.13309, ... are accepted as a valid gyro scale and 0.13309 is the
scale that gets set in all those cases.

Make sure to check that the integer part of the scale value is 0 and reject
it otherwise.

Fixes: 09a642b78523 ("Invensense MPU6050 Device Driver.")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Link: https://lore.kernel.org/r/20210405114441.24167-1-lars@metafoo.de
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

iio: sx9310: Fix write_.._debounce()

Check input to be sure it matches Semtech sx9310 specification and
can fit into debounce register.
Compare argument writen to thresh_.._period with read from same
sysfs attribute:

Before:                   Afer:
write   |  read           write   |  read
-1      |     8           -1 fails: -EINVAL
0       |     8           0       |     0
1       |     0           1       |     0
2..15   |  2^log2(N)      2..15   |  2^log2(N)
16      |     0           >= 16 fails: -EINVAL

Fixes: 1b6872015f0b ("iio: sx9310: Support setting debounce values")
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Cc: stable@vger.kernel.org
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20210331182222.219533-1-gwendal@chromium.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

iio: sx9310: Fix access to variable DT array

With the current code, we want to read 4 entries from DT array
"semtech,combined-sensors". If there are less, we silently fail as
of_property_read_u32_array() returns -EOVERFLOW.

First count the number of entries and if between 1 and 4, collect the
content of the array.

Fixes: 5b19ca2c78a0 ("iio: sx9310: Set various settings from DT")
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210326184603.251683-2-gwendal@chromium.org
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

iio: adc: Kconfig: make AD9467 depend on ADI_AXI_ADC symbol

Because a dependency on HAS_IOMEM and OF was added for the ADI AXI ADC
driver, this makes the AD9467 driver have some build/dependency issues
when OF is disabled (typically on ACPI archs like x86).

This is because the selection of the AD9467 enforces the ADI_AXI_ADC symbol
which is blocked by the OF (and potentially HAS_IOMEM) being disabled.

To fix this, we make the AD9467 driver depend on the ADI_AXI_ADC symbol.
The AD9467 driver cannot operate on it's own. It requires the ADI AXI ADC
driver to stream data (or some similar IIO interface).

So, the fix here is to make the AD9467 symbol depend on the ADI_AXI_ADC
symbol. At some point this could become it's own subgroup of high-speed
ADCs.

Fixes: be24c65e9fa24 ("iio: adc: adi-axi-adc: add proper Kconfig dependencies")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20210324182746.9337-1-aardelean@deviqon.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

iio: magnetometer: yas530: Include right header

To get access to the big endian byte order parsing helpers
drivers need to include <asm/unaligned.h> and nothing else.

Reported-by: kernel test robot <lkp@intel.com>
Suggested-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: <Stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210215153032.47962-1-linus.walleij@linaro.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

iio: magnetometer: yas530: Fix return value on error path

There was a missed return variable assignment in the
default errorpath of the switch statement in yas5xx_probe().
Fix it.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210215153023.47899-1-linus.walleij@linaro.org
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

iio:cdc:ad7150: Fix use of uninitialized ret

This doesn't appear to generate a warning on all versions of GCC, but
0-day reported it and the report looks valid.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

iio: hrtimer-trigger: Fix potential integer overflow in iio_hrtimer_store_sampling_frequency

Add suffix ULL to constant 1000 in order to avoid a potential integer
overflow and give the compiler complete information about the proper
arithmetic to use. Notice that this constant is being used in a context
that expects an expression of type unsigned long long, but it's
currently evaluated using 32-bit arithmetic.

Addresses-Coverity-ID: 1503062 ("Unintentional integer overflow")
Fixes: dafcf4ed8392 ("iio: hrtimer: Allow sub Hz granularity")
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20210329205817.GA188755@embeddedor
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

iio:adc: Fix trivial typo

"an" should be "and".

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20210401150810.227168-1-jic23@kernel.org

iio:adc:ad7476: Fix remove handling

This driver was in an odd half way state between devm based cleanup
and manual cleanup (most of which was missing).
I would guess something went wrong with a rebase or similar.
Anyhow, this basically finishes the job as a precursor to improving
the regulator handling.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Fixes: 4bb2b8f94ace3 ("iio: adc: ad7476: implement devm_add_action_or_reset")
Cc: Michael Hennerich <michael.hennerich@analog.com>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Cc: <Stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210401171759.318140-2-jic23@kernel.org

iio:adc:ad_sigma_delta: Use IRQF_NO_AUTOEN rather than request and disable

These devices are not able to mask the signal used as a data ready
interrupt.  As such they previously requested the irq then immediately
disabled it.  Now we can avoid the potential of a spurious interrupt
by avoiding the irq being auto enabled in the first place.

I'm not sure how this code could have been called with the irq already
disabled, so I believe the conditional would always have been true and
have removed it.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Alexandru Ardelean <ardeleanalex@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20210402184544.488862-8-jic23@kernel.org

iio:imu:adis: Use IRQF_NO_AUTOEN instead of irq request then disable

This is a bit involved as the adis library code already has some
sanity checking of the flags of the requested irq that we need
to ensure is happy to pass through the IRQF_NO_AUTOEN flag untouched.

Using this flag avoids us autoenabling the irq in the adis16460 and
adis16475 drivers which cover parts that don't have any means of
masking the interrupt on the device end.

Note, compile tested only!

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Alexandru Ardelean <ardeleanalex@gmail.com>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: Barry Song <song.bao.hua@hisilicon.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20210402184544.488862-7-jic23@kernel.org

iio:chemical:scd30: Use IRQF_NO_AUTOEN to avoid irq request then disable

This new flag cleanly avoids the need for a dance where we request the
interrupt only to immediately disabling it by ensuring it is not
auto-enabled in the first place.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Tomasz Duszynski <tomasz.duszynski@octakon.com>
Reviewed-by: Barry Song <song.bao.hua@hisilicon.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20210402184544.488862-6-jic23@kernel.org

iio:adc:sun4i-gpadc: Use new IRQF_NO_AUTOEN flag instead of request then disable

This new flag ensures a requested irq is not autoenabled, thus removing
the need for the disable_irq() that follows and closing off any chance
of spurious interrupts.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Barry Song <song.bao.hua@hisilicon.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20210402184544.488862-5-jic23@kernel.org

iio:adc:nau7802: Use IRQF_NO_AUTOEN instead of request then disable

Whilst a race during interrupt enabling is probably not a problem,
it is better to not enable the interrupt at all.  The new
IRQF_NO_AUTOEN flag allows us to do that.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Barry Song <song.bao.hua@hisilicon.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20210402184544.488862-4-jic23@kernel.org

iio:adc:exynos-adc: Use new IRQF_NO_AUTOEN flag rather than separate irq_disable()

Disabling an irq before the driver has actually atempted to request it
may work, but is definitely not as clean as just requesting it as
normal but with the auto enable disabled.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Barry Song <song.bao.hua@hisilicon.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20210402184544.488862-3-jic23@kernel.org

iio:adc:ad7766: Use new IRQF_NO_AUTOEN to reduce boilerplate

As iio_poll_trigger() is safe against spurious interrupts when the
trigger is not enabled, this is not a fix despite looking like
a race.  It is nice to simplify the code however so the interrupt
is never enabled in the first place.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Barry Song <song.bao.hua@hisilicon.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20210402184544.488862-2-jic23@kernel.org

Merge tag 'irq-no-autoen-2021-03-25' into togreg

Tag for the input subsystem to pick up

Picked up for IIO to allow similar changes.

iio: buffer: use sysfs_attr_init() on allocated attrs

When dynamically allocating sysfs attributes, it's a good idea to call
sysfs_attr_init() on them to initialize lock_class_keys.
This change does that.

The lock_class_keys are set when the CONFIG_DEBUG_LOCK_ALLOC symbol is
enabled. Which is [likely] one reason why I did not see this during
development.

I also am not able to see this even with CONFIG_DEBUG_LOCK_ALLOC enabled,
so this may [likely] be reproduce-able on some system configurations.

This was reported via:
  https://lore.kernel.org/linux-iio/CA+U=DsrsvGgXEF30-vXuXS_k=-mjSjiBwEEzwKb1hJVn1P98OA@mail.gmail.com/T/#u

Fixes: 15097c7a1adc ("iio: buffer: wrap all buffer attributes into iio_dev_attr")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com>
Link: https://lore.kernel.org/r/20210402174226.630346-1-aardelean@deviqon.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

iio: trigger: Fix strange (ladder-type) indentation

In some cases indentation looks a bit weird with starting from = sign
and being in a ladder-type style. Unify it across the module.

While at it, add blank line after definition block where it needed,

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210402174911.44408-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

iio: trigger: Replace explicit casting and wrong specifier with proper one

By unknown reason device name is set with an index casted from int
to unsigned long while at the same time with "%ld" specifier. Both parts
seems wrong to me, thus replace replace explicit casting and wrong specifier
with proper one, i.e. "%d".

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20210402174911.44408-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

iio: adc: stm32-dfsdm: drop __func__ while using Dynamic debug

Dropped __func__ while using dev_dbg() and pr_debug()
If the function name is desired, it can be configured using
dynamic debug.

Signed-off-by: Mugilraj Dhavachelvan <dmugil2000@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210401154343.41527-1-dmugil2000@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

iio:adc: Drop false comment about lack of timestamp control

The timestamp control has been a function implemented in the core of
IIO for a long time, so this comment is incorrect and has clearly been
cut and paste into all these drivers.

The remainder of the comment added nothing and was confusing so dropped
that as well.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Michael Hennerich <Michael.Hennerich@analog.com>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Link: https://lore.kernel.org/r/20210401145410.226917-1-jic23@kernel.org

dt-bindings:iio:dac: update microchip,mcp4725.yaml reference

Changeset 6ced946a4bba ("dt-bindings:iio:dac:microchip,mcp4725 yaml conversion")
renamed: Documentation/devicetree/bindings/iio/dac/mcp4725.txt
to: Documentation/devicetree/bindings/iio/dac/microchip,mcp4725.yaml.

Update its cross-reference accordingly.

Fixes: 6ced946a4bba ("dt-bindings:iio:dac:microchip,mcp4725 yaml conversion")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/82fb54974e8a22be15e64343260a6de39a18edda.1617279356.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS: update ti,dac7612.yaml reference

Changeset 8b74e06b0f4d ("dt-bindings:iio:dac:ti,dac7612 yaml conversion")
renamed: Documentation/devicetree/bindings/iio/dac/ti,dac7612.txt
to: Documentation/devicetree/bindings/iio/dac/ti,dac7612.yaml.

Update its cross-reference accordingly.

Fixes: 8b74e06b0f4d ("dt-bindings:iio:dac:ti,dac7612 yaml conversion")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/04039b6991838f0107a42ccb0d9774cb8873a61a.1617279355.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS: update st,vl53l0x.yaml reference

Changeset b4be8bd1c6a2 ("dt-bindings:iio:proximity:st,vl53l0x yaml conversion")
renamed: Documentation/devicetree/bindings/iio/proximity/vl53l0x.txt
to: Documentation/devicetree/bindings/iio/proximity/st,vl53l0x.yaml.

Update its cross-reference accordingly.

Fixes: b4be8bd1c6a2 ("dt-bindings:iio:proximity:st,vl53l0x yaml conversion")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/c315ff7435bb4382b9c729a6242d098befb7796d.1617279355.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS: update st,lsm6dsx.yaml reference

Changeset 7a2cf8e91390 ("dt-bindings:iio:imu:st,lsm6dsx: txt to yaml conversion")
renamed: Documentation/devicetree/bindings/iio/imu/st_lsm6dsx.txt
to: Documentation/devicetree/bindings/iio/imu/st,lsm6dsx.yaml.

Update its cross-reference accordingly.

Fixes: 7a2cf8e91390 ("dt-bindings:iio:imu:st,lsm6dsx: txt to yaml conversion")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/e058dc096c39933eb7647a86c57b3489906c89c3.1617279355.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS: update renesas,rcar-gyroadc.yaml reference

Changeset 8c41245872e2 ("dt-bindings:iio:adc:renesas,rcar-gyroadc: txt to yaml conversion.")
renamed: Documentation/devicetree/bindings/iio/adc/renesas,gyroadc.txt
to: Documentation/devicetree/bindings/iio/adc/renesas,rcar-gyroadc.yaml.

Update its cross-reference accordingly.

Fixes: 8c41245872e2 ("dt-bindings:iio:adc:renesas,rcar-gyroadc: txt to yaml conversion.")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/aa999b76bb0b6c3ca4cb0c1a8679c22c91690429.1617279355.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS: update pni,rm3100.yaml reference

Changeset f383069be33e ("dt-bindings:iio:magnetometer:pni,rm3100: txt to yaml conversion.")
renamed: Documentation/devicetree/bindings/iio/magnetometer/pni,rm3100.txt
to: Documentation/devicetree/bindings/iio/magnetometer/pni,rm3100.yaml.

Update its cross-reference accordingly.

Fixes: f383069be33e ("dt-bindings:iio:magnetometer:pni,rm3100: txt to yaml conversion.")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/d9090dc18907b4c534bf12a47e47a96ed1d3b45a.1617279355.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS: update atmel,sama5d2-adc.yaml reference

Changeset 58ff1b519753 ("dt-bindings:iio:adc:atmel,sama5d2-adc: txt to yaml conversion")
renamed: Documentation/devicetree/bindings/iio/adc/at91-sama5d2_adc.txt
to: Documentation/devicetree/bindings/iio/adc/atmel,sama5d2-adc.yaml.

Update its cross-reference accordingly.

Fixes: 58ff1b519753 ("dt-bindings:iio:adc:atmel,sama5d2-adc: txt to yaml conversion")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/4574e4b7612f5fd683fddbcd7d7307d5e6d02988.1617279355.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS: update voltage-divider.yaml reference

Changeset 6f633bc91ac1 ("dt-bindings:iio:afe:voltage-divider: txt to yaml conversion")
renamed: Documentation/devicetree/bindings/iio/afe/voltage-divider.txt
to: Documentation/devicetree/bindings/iio/afe/voltage-divider.yaml.

Update its cross-reference accordingly.

Fixes: 6f633bc91ac1 ("dt-bindings:iio:afe:voltage-divider: txt to yaml conversion")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/5006767228ea6392a33e280612599ab5749db021.1617279355.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS: update current-sense-shunt.yaml reference

Changeset ce66e52b6c16 ("dt-bindings:iio:afe:current-sense-shunt: txt to yaml conversion.")
renamed: Documentation/devicetree/bindings/iio/afe/current-sense-shunt.txt
to: Documentation/devicetree/bindings/iio/afe/current-sense-shunt.yaml.

Update its cross-reference accordingly.

Fixes: ce66e52b6c16 ("dt-bindings:iio:afe:current-sense-shunt: txt to yaml conversion.")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/49371c37a988ffcae9188cbe4735e6eab920b2e0.1617279355.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS: update current-sense-amplifier.yaml reference

Changeset fbac26b9ad21 ("dt-bindings:iio:afe:current-sense-amplifier: txt to yaml conversion.")
renamed: Documentation/devicetree/bindings/iio/afe/current-sense-amplifier.txt
to: Documentation/devicetree/bindings/iio/afe/current-sense-amplifier.yaml.

Update its cross-reference accordingly.

Fixes: fbac26b9ad21 ("dt-bindings:iio:afe:current-sense-amplifier: txt to yaml conversion.")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/d0008b06f8ca65108eb1e7734ec6e3e32ec28172.1617279355.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS: update envelope-detector.yaml reference

Changeset 66a6dcc20e63 ("dt-bindings:iio:adc:envelope-detector: txt to yaml conversion.")
renamed: Documentation/devicetree/bindings/iio/adc/envelope-detector.txt
to: Documentation/devicetree/bindings/iio/adc/envelope-detector.yaml.

Update its cross-reference accordingly.

Fixes: 66a6dcc20e63 ("dt-bindings:iio:adc:envelope-detector: txt to yaml conversion.")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/d4ccc625ccb89730c03204b7aae98fd94ea97fc2.1617279355.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS: update dpot-dac.yaml reference

Changeset 06d2ff6fe11e ("dt-bindings:iio:dac:dpot-dac: yaml conversion.")
renamed: Documentation/devicetree/bindings/iio/dac/dpot-dac.txt
to: Documentation/devicetree/bindings/iio/dac/dpot-dac.yaml.

Update its cross-reference accordingly.

Fixes: 06d2ff6fe11e ("dt-bindings:iio:dac:dpot-dac: yaml conversion.")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/efda999adce3332dc1b5c20a998f3824c1cc1b0f.1617279355.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS: update st,hts221.yaml reference

Changeset 9a6ac3138258 ("dt-bindings:iio:humidity:st,hts221 yaml conversion.")
renamed: Documentation/devicetree/bindings/iio/humidity/hts221.txt
to: Documentation/devicetree/bindings/iio/humidity/st,hts221.yaml.

Update its cross-reference accordingly.

Fixes: 9a6ac3138258 ("dt-bindings:iio:humidity:st,hts221 yaml conversion.")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/a83cf29bbd27b26eb22e0046c41efebf488e7e4d.1617279355.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

MAINTAINERS: update adi,ad5758.yaml reference

Changeset 1e6536ee349b ("dt-bindings:iio:dac:adi,ad5758 yaml conversion")
renamed: Documentation/devicetree/bindings/iio/dac/ad5758.txt
to: Documentation/devicetree/bindings/iio/dac/adi,ad5758.yaml.

Update its cross-reference accordingly.

Fixes: 1e6536ee349b ("dt-bindings:iio:dac:adi,ad5758 yaml conversion")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/ca35b929c098163cfda9682ce791572629b763e2.1617279355.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

iio:cdc:ad7150: Move driver out of staging.

This capacitance to digital converter (CDC) driver is compliant with
the IIO ABI.  Note, not all features supported (e.g. window event modes)
but the driver should be in a useful functional state.

The cleanup was done against QEMU emulation of the device rather than
actual hardware.   Whilst this was a bit of an experiment, it made it
easy to confirm that the driver remained in a consistent working state
through the various refactors.  If it worked in the first place, it
should still be working after this cleanup.

Given some IIO drivers require expensive hardware setups, (not particularly
true with this one) the use of QEMU may provide a viable way forward
for providing testing during code changes where previously we'd had
to rely on sharp eyes and crossed fingers.

Note, no explicit MAINTAINERS entry as it will be covered by the
generic catch-alls for ADI and IIO drivers which are sufficient.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210314181511.531414-25-jic23@kernel.org

dt-bindings:iio:cdc:adi,ad7150 binding doc

Binding covering the ad7150, ad7151 and ad7156 capacitance to digital
convertors.  The only difference between these is how many channels they
have (1 or 2)

Whilst it is clearly necessary to provide power to the part, we don't
need to know the voltage or anything so if it is always on, there should
be no need to have it specified in the binding.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: devicetree@vger.kernel.org
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210314181511.531414-24-jic23@kernel.org

staging:iio:cdc:ad7150: Add copyright notice given substantial changes.

It seems to me that the changes made to get this ready to move out of
staging are substantial enough to warant a copyright notice addition.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210314181511.531414-23-jic23@kernel.org

iio:Documentation:ABI Add missing elements as used by the adi,ad7150

Main additions are around thresh_adaptive.  This has been supported
by the core of IIO for a long time, but no driver that uses it has
previously graduated from staging, hence we are missing Docs.

Otherwise, just new entries in existing lists.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Link: https://lore.kernel.org/r/20210314181511.531414-22-jic23@kernel.org

staging:iio:cdc:ad7150: Add of_match_table

Rather than using the fallback path in the i2c subsystem and hoping
for no clashes across vendors, lets put in an explicit table for
matching.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Reviewed-by: Barry Song <song.bao.hua@hisilicon>
Link: https://lore.kernel.org/r/20210314181511.531414-21-jic23@kernel.org

staging:iio:cdc:ad7150: Really basic regulator support.

Given DT docs will include regulators, lets just turn them on and
off with driver probe() and remove().

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210314181511.531414-20-jic23@kernel.org

staging:iio:cdc:ad7150: Add scale and offset to info_mask_shared_by_type

The datasheet provides these two values on the assumption they are applied
to unshift raw value.  Hence shift both the offset and scale by 4
to compensate.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210314181511.531414-19-jic23@kernel.org

staging:iio:cdc:ad7150: Shift the _raw readings by 4 bits.

Every other register related to raw value on the datasheet is
described as correpsonding to the 12MSB of the actual
data registers + the bottom 4 bits are 0.  So lets treat this
as what it actually is, which is a 12 bit value.
Note that we will have to be a little careful to compensate for
the offset and scale values.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210314181511.531414-18-jic23@kernel.org

staging:iio:cdc:ad7150: Drop unnecessary block comments.

These have a habit of not getting updated with driver reorganizations
and don't add much info so drop them.

Also fix a minor comment syntax issue.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Barry Song <song.bao.hua@hisilicon.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210314181511.531414-17-jic23@kernel.org

staging:iio:cdc:ad7150: Tidy up local variable positioning.

Where there is no other basis on which to order declarations
let us prefer reverse xmas tree.  Also reduce scope where
sensible.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Barry Song <song.bao.hua@hisilicon.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210314181511.531414-16-jic23@kernel.org

staging:iio:cdc:ad7150: Reorganize headers.

Whilst not important, it's nice to have the general headers in
alphabetical order.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Barry Song <song.bao.hua@hisilicon.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210314181511.531414-15-jic23@kernel.org

staging:iio:cdc:ad7150: More consistent register and field naming

Add _REG postfix to register addresses to avoid confusion with
fields.  Also add additional field defines and use throughout the
driver in place of magic numbers.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210314181511.531414-14-jic23@kernel.org

staging:iio:cdc:ad7150: Rework interrupt handling.

Note this doesn't support everything the chip can do as we ignore
window mode for now (in window / out of window).

* Given the chip doesn't have any way of disabling the threshold
  pins, use disable_irq() etc to mask them except when we actually
  want them enabled (previously events were always enabled).
  Note there are race conditions, but using the current state from
  the status register and disabling interrupts across changes in
  type of event should mean those races result in interrupts,
  but no events to userspace.

* Correctly reflect that there is one threshold line per channel.

* Only take notice of rising edge. If anyone wants the other edge
  then they should set the other threshold (they are available for
  rising and falling directions).  This isn't perfect but it makes
  it a lot simpler.

* If insufficient interrupts are specified in firnware, don't support
  events.

* Adaptive events use the same pos/neg values of thrMD as non adaptive
  ones.

Tested against qemu based emulation.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Link: https://lore.kernel.org/r/20210314181511.531414-13-jic23@kernel.org

staging:iio:cdc:ad7150: Change timeout units to seconds and use core support

Now we have core support for timeouts related to adaptive events, let us
use it.  Note the units of that attribute are seconds, so we also need
to scale the cycles value by the period of each sample.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210314181511.531414-12-jic23@kernel.org