staging: r8188eu: remove DeInitSwLeds from hal_ops

Remove DeInitSwLeds from hal_ops and remove its wrapper
rtw_hal_sw_led_deinit(). Call rtl8188eu_DeInitSwLeds() directly
instead.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210906190223.11396-3-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove InitSwLeds from hal_ops

Remove InitSwLeds from hal_ops and remove its wrapper
rtw_hal_sw_led_init(). Call rtl8188eu_InitSwLeds() directly instead.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210906190223.11396-2-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: Remove _enter/_exit_critical_mutex()

Remove _enter_critical_mutex() and _exit_critical_mutex(). They are
unnecessary wrappers, respectively to mutex_lock_interruptible() and
to mutex_unlock(). They also have an odd interface that takes an unused
argument named pirqL of type unsigned long.
The original code enters the critical section if the mutex API is
interrupted while waiting to acquire the lock; therefore it could lead
to a race condition. Use mutex_lock() because it is uninterruptible and
so avoid that above-mentioned potential race condition.

Tested-by: Pavel Skripkin <paskripkin@gmail.com>
Reviewed-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Link: https://lore.kernel.org/r/20210828113656.6963-1-fmdefrancesco@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove _rtw_mutex_{init,free}

While testing Fabio's patch I hit lockdep warning about possible
deadlock:

[  252.063305] WARNING: possible recursive locking detected
[  252.063642] 5.14.0+ #9 Tainted: G         C
[  252.063946] --------------------------------------------
[  252.064282] ip/335 is trying to acquire lock:
[  252.064560] ffff888009ebad28 (pmutex){+.+.}-{4:4}, at: usbctrl_vendorreq+0xc5/0x4a0 [r8188eu]
[  252.065168]
[  252.065168] but task is already holding lock:
[  252.065536] ffffffffc021b3b8 (pmutex){+.+.}-{4:4}, at:  netdev_open+0x3a/0x5f [r8188eu]
[  252.066085]
[  252.066085] other info that might help us debug this:
[  252.066494]  Possible unsafe locking scenario:
[  252.066494]
[  252.066866]        CPU0
[  252.067025]        ----
[  252.067184]   lock(pmutex);
[  252.067367]   lock(pmutex);

There is one problem with this warning: there is no pmutex in this
driver, *BUT* all mutexes are initialized via private _rtw_mutex_init
API, which had struct mutex *pmutex argument.

So, all mutexes in this driver had same name in lockdep map. Of course,
lockdep will complain about any nested locking.

Fix it by open-coding _rtw_mutex_{init,free} wrappers, because we do not
need them at all.

Cc: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Link: https://lore.kernel.org/r/20210904124747.30050-1-paskripkin@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove useless check

smatch says:
usb_intf.c:326 rtw_hw_suspend() warn: variable dereferenced before check 'padapter' (see line 323)
usb_intf.c:387 rtw_hw_resume() warn: variable dereferenced before check 'padapter' (see line 385)

There is only one caller of rtw_hw_suspend() and it does not check
padapter pointer, so let's just omit this check to make smatch happy.

Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Link: https://lore.kernel.org/r/20210905204218.19317-1-paskripkin@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: include: remove duplicate declaration.

Remove below duplicate declaration from rtl8188e_led.h file

void SwLedOn(struct adapter *padapter, struct LED_871x *pLed);
void SwLedOff(struct adapter *padapter, struct LED_871x *pLed);

Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/YTRuXTu/kePBDwAF@user
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove c2h_id_filter_ccx from struct hal_ops

Remove c2h_id_filter_ccx function pointer from struct hal_ops, as it
is unused.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210906010106.898-15-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove rtw_hal_c2h_id_filter_ccx function

Remove rtw_hal_c2h_id_filter_ccx from hal/hal_intf.c and its one caller
from core/rtw_cmd.c. This function is a wrapper function which returns
the c2h_id_filter_ccx function pointer of struct hal_ops unconditionally.
As this function pointer is never set, and the function call's return
value is subsequently called inside an if condition, this could lead to
an attempt to deference a NULL pointer, which would crash the driver.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210906010106.898-14-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove Efuse_PgPacketWrite_BT from struct hal_ops

Remove Efuse_PgPacketWrite_BT function pointer from struct hal_ops, as it
is unused.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210906010106.898-13-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove Efuse_PgPacketWrite_BT function

Remove static Efuse_PgPacketWrite_BT and its one caller from
core/rtw_efuse.c. This function is a wrapper function which calls
the Efuse_PgPacketWrite_BT function pointer of struct hal_ops
unconditionally. As this function pointer is never set, and this
function call is possible to reach, this could lead to an attempt to
deference a NULL pointer, which would crash the driver.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210906010106.898-12-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove hal_xmitframe_enqueue from struct hal_ops

Remove hal_xmitframe_enqueue function pointer from struct hal_ops, as it
is unused.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210906010106.898-11-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove rtw_hal_xmitframe_enqueue function

Remove rtw_hal_xmitframe_enqueue from hal/hal_intf.c and its one
caller from core/rtw_recv.c, and remove its declaration from
include/hal_intf.h as well. This is just a wrapper function that calls
the function pointer hal_xmitframe_enqueue in struct hal_ops if it
is set, which it never is.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210906010106.898-10-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove interrupt_handler from struct hal_ops

Remove interrupt_handler function pointer from struct hal_ops, as it
is unused.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210906010106.898-9-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove rtw_hal_interrupt_handler function

Remove rtw_hal_interrupt_handler from hal/hal_intf.c, and remove its
declaration from include/hal_intf.h as well. This is just a wrapper
function that calls the function pointer interrupt_handler in struct
hal_ops if it is set, which it never is. In addition, this wrapper
function is unused anyway.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210906010106.898-8-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove disable_interrupt from struct hal_ops

Remove disable_interrupt function pointer from struct hal_ops, as it
is unused.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210906010106.898-7-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove rtw_hal_disable_interrupt function

Remove rtw_hal_disable_interrupt from hal/hal_intf.c, and remove its
declaration from include/hal_intf.h as well. This is just a wrapper
function that calls the function pointer disable_interrupt in struct
hal_ops if it is set, which it never is. In addition, this wrapper
function is unused anyway.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210906010106.898-6-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove enable_interrupt from struct hal_ops

Remove enable_interrupt function pointer from struct hal_ops, as it
is unused.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210906010106.898-5-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove rtw_hal_enable_interrupt function

Remove rtw_hal_enable_interrupt from hal/hal_intf.c, and remove its
declaration from include/hal_intf.h as well. This is just a wrapper
function that calls the function pointer enable_interrupt in struct
hal_ops if it is set, which it never is. In addition, this wrapper
function is unused anyway.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210906010106.898-4-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove hal_reset_security_engine from struct hal_ops

Remove hal_reset_security_engine function pointer from struct hal_ops,
as it is unused.

Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210906010106.898-3-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove rtw_hal_reset_security_engine function

Remove rtw_hal_reset_security_engine and its one caller from
hal/hal_intf.c, and remove its declaration from include/hal_intf.h as
well. This is just a wrapper function that calls the function pointer
hal_reset_security_engine in struct hal_ops if it is set, which it never
is.

Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210906010106.898-2-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: core: remove condition never execute

Remove condition which never get execute.
as pattrib->mdata is always zero before if condition check.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Acked-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/YTNrjG1y05ByN54+@user
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove init_default_value from hal_ops

Remove init_default_value from hal_ops and remove its wrapper
rtw_hal_def_value_init(). Call rtl8188eu_init_default_value()
directly instead

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210904124033.14244-7-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove GetHalODMVarHandler from hal_ops

Remove GetHalODMVarHandler from hal_ops ant remove its wrapper
rtw_hal_get_odm_var(), both are unused.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210904124033.14244-6-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove wrapper around ReadChipVersion8188E()

Function ReadChipVersion8188E() is only called by the wrapper
rtl8188e_read_chip_version(). Rename ReadChipVersion8188E()
to rtl8188e_read_chip_version() and change the return type to
void since the return value is never used.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210904124033.14244-5-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove read_chip_version from hal_ops

Remove read_chip_version from hal_ops and remove its wrapper
rtw_hal_read_chip_version(). Call rtl8188e_read_chip_version()
directly instead

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210904124033.14244-4-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove read_adapter_info from hal_ops

Remove read_adapter_info from hal_ops and remove its wrapper
rtw_hal_read_chip_info(). Call ReadAdapterInfo8188EU() directly
instead.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210904124033.14244-3-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove intf_chip_configure from hal_ops

Remove intf_chip_configure from hal_ops and remove its wrapper
rtw_hal_chip_configure(). Call rtl8188eu_interface_configure()
directly instead.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210904124033.14244-2-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: fbtft: fbtft-core: fix 'trailing statements should be on next line' coding style error

Fix coding style error 'trailing statements should be on next line'

Signed-off-by: Srivathsa Dara <srivathsa729.8@gmail.com>
Link: https://lore.kernel.org/r/20210904080916.15476-1-srivathsa729.8@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove useless memset

psetkeyparm is kzalloced buffer, there is no need in zeroing it one more
time, since kzalloc had already set memory to 0.

Fixes: 15865124feed ("staging: r8188eu: introduce new core dir for RTL8188eu driver")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Link: https://lore.kernel.org/r/97a283ed5b97632033b0fc7c6aa0fbfc82f06da3.1630692375.git.paskripkin@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: fix memory leak in rtw_set_key

Before returning with an error we should free allocated buffers, since
they are not assigned to anywhere.

Fixes: 15865124feed ("staging: r8188eu: introduce new core dir for RTL8188eu driver")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Link: https://lore.kernel.org/r/ee783fbb71abb549505b84542223be7a7c905eea.1630692375.git.paskripkin@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: hal: remove condition with no effect

Fixes coccicheck warning: Remove the condition with no effect
(if == else) in odm.c

Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/YTMHxQJXKZHE5mg0@user
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove rtw_use_tkipkey_handler()

Function rtw_use_tkipkey_handler() is unused, remove it.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210903190444.15585-4-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: use in-kernel arc4 encryption

Replace custom arc4 implementation with in-kernel one.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210903190444.15585-3-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove unused constant CRC32_POLY

Remove unused constant CRC32_POLY.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210903190444.15585-2-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove enum hardware_type

From enum hardware_type only HARDWARE_TYPE_RTL8188EU is used in the
driver. Remove the enum and define HARDWARE_TYPE_RTL8188EU.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210903093354.12645-7-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove IS_HARDWARE_TYPE_8188* macros

The IS_HARDWARE_TYPE_8188* macros are not needed because the driver
is for RTL8188EU chips, remove them.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210903093354.12645-6-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove unused enum rt_eeprom_type

Remove unused enum rt_eeprom_type.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210903093354.12645-5-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove unused enum from ieee80211.h.

Remove unused enum from ieee80211.h.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210903093354.12645-4-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove unused defines from mp_custom_oid.h

Remove unused defines from mp_custom_oid.h.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210903093354.12645-3-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove header file rtw_ioctl_rtl.h

All functions declared in rtw_ioctl_rtl.h are not implemented.
Remove rtw_ioctl_rtl.h and its includes.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210903093354.12645-2-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove possible deadlock when disconnect

when turning off a connection, lockdep complains with the
following warning (a modprobe has been done but the same
happens with a disconnection from NetworkManager,
it's enough to trigger a cfg80211_disconnect call):

[  682.855867] ======================================================
[  682.855877] WARNING: possible circular locking dependency detected
[  682.855887] 5.14.0-rc6+ #16 Tainted: G         C OE
[  682.855898] ------------------------------------------------------
[  682.855906] modprobe/1770 is trying to acquire lock:
[  682.855916] ffffb6d000332b00 (&pxmitpriv->lock){+.-.}-{2:2},
at: rtw_free_stainfo+0x52/0x4a0 [r8723bs]
[  682.856073]
               but task is already holding lock:
[  682.856081] ffffb6d0003336a8 (&pstapriv->sta_hash_lock){+.-.}-{2:2},
at: rtw_free_assoc_resources+0x48/0x110 [r8723bs]
[  682.856207]
               which lock already depends on the new lock.

[  682.856215]
               the existing dependency chain (in reverse order) is:
[  682.856223]
               -> #1 (&pstapriv->sta_hash_lock){+.-.}-{2:2}:
[  682.856247]        _raw_spin_lock_bh+0x34/0x40
[  682.856265]        rtw_get_stainfo+0x9a/0x110 [r8723bs]
[  682.856389]        rtw_xmit_classifier+0x27/0x130 [r8723bs]
[  682.856515]        rtw_xmitframe_enqueue+0xa/0x20 [r8723bs]
[  682.856642]        rtl8723bs_hal_xmit+0x3b/0xb0 [r8723bs]
[  682.856752]        rtw_xmit+0x4ef/0x890 [r8723bs]
[  682.856879]        _rtw_xmit_entry+0xba/0x350 [r8723bs]
[  682.856981]        dev_hard_start_xmit+0xee/0x320
[  682.856999]        sch_direct_xmit+0x8c/0x330
[  682.857014]        __dev_queue_xmit+0xba5/0xf00
[  682.857030]        packet_sendmsg+0x981/0x1b80
[  682.857047]        sock_sendmsg+0x5b/0x60
[  682.857060]        __sys_sendto+0xf1/0x160
[  682.857073]        __x64_sys_sendto+0x24/0x30
[  682.857087]        do_syscall_64+0x3a/0x80
[  682.857102]        entry_SYSCALL_64_after_hwframe+0x44/0xae
[  682.857117]
               -> #0 (&pxmitpriv->lock){+.-.}-{2:2}:
[  682.857142]        __lock_acquire+0xfd9/0x1b50
[  682.857158]        lock_acquire+0xb4/0x2c0
[  682.857172]        _raw_spin_lock_bh+0x34/0x40
[  682.857185]        rtw_free_stainfo+0x52/0x4a0 [r8723bs]
[  682.857308]        rtw_free_assoc_resources+0x53/0x110 [r8723bs]
[  682.857415]        cfg80211_rtw_disconnect+0x4b/0x70 [r8723bs]
[  682.857522]        cfg80211_disconnect+0x12e/0x2f0 [cfg80211]
[  682.857759]        cfg80211_leave+0x2b/0x40 [cfg80211]
[  682.857961]        cfg80211_netdev_notifier_call+0xa9/0x560 [cfg80211]
[  682.858163]        raw_notifier_call_chain+0x41/0x50
[  682.858180]        __dev_close_many+0x62/0x100
[  682.858195]        dev_close_many+0x7d/0x120
[  682.858209]        unregister_netdevice_many+0x416/0x680
[  682.858225]        unregister_netdevice_queue+0xab/0xf0
[  682.858240]        unregister_netdev+0x18/0x20
[  682.858255]        rtw_unregister_netdevs+0x28/0x40 [r8723bs]
[  682.858360]        rtw_dev_remove+0x24/0xd0 [r8723bs]
[  682.858463]        sdio_bus_remove+0x31/0xd0 [mmc_core]
[  682.858532]        device_release_driver_internal+0xf7/0x1d0
[  682.858550]        driver_detach+0x47/0x90
[  682.858564]        bus_remove_driver+0x77/0xd0
[  682.858579]        rtw_drv_halt+0xc/0x678 [r8723bs]
[  682.858685]        __x64_sys_delete_module+0x13f/0x250
[  682.858699]        do_syscall_64+0x3a/0x80
[  682.858715]        entry_SYSCALL_64_after_hwframe+0x44/0xae
[  682.858729]
               other info that might help us debug this:

[  682.858737]  Possible unsafe locking scenario:

[  682.858744]        CPU0                    CPU1
[  682.858751]        ----                    ----
[  682.858758]   lock(&pstapriv->sta_hash_lock);
[  682.858772]                                lock(&pxmitpriv->lock);
[  682.858786]                                lock(&pstapriv->sta_hash_lock);
[  682.858799]   lock(&pxmitpriv->lock);
[  682.858812]
                *** DEADLOCK ***

[  682.858820] 5 locks held by modprobe/1770:
[  682.858831]  #0: ffff8d870697d980 (&dev->mutex){....}-{3:3},
at: device_release_driver_internal+0x1a/0x1d0
[  682.858869]  #1: ffffffffbdbbf1c8 (rtnl_mutex){+.+.}-{3:3},
at: unregister_netdev+0xe/0x20
[  682.858906]  #2: ffff8d87054ee5e8 (&rdev->wiphy.mtx){+.+.}-{3:3},
at: cfg80211_netdev_notifier_call+0x9e/0x560 [cfg80211]
[  682.859131]  #3: ffff8d870f2bc8f0 (&wdev->mtx){+.+.}-{3:3},
at: cfg80211_leave+0x20/0x40 [cfg80211]
[  682.859354]  #4: ffffb6d0003336a8 (&pstapriv->sta_hash_lock){+.-.}-{2:2},
at: rtw_free_assoc_resources+0x48/0x110 [r8723bs]
[  682.859482]
               stack backtrace:
[  682.859491] CPU: 1 PID: 1770 Comm: modprobe Tainted: G
C OE     5.14.0-rc6+ #16
[  682.859507] Hardware name: LENOVO 80NR/Madrid, BIOS DACN25WW 08/20/2015
[  682.859517] Call Trace:
[  682.859531]  dump_stack_lvl+0x56/0x6f
[  682.859551]  check_noncircular+0xdb/0xf0
[  682.859579]  __lock_acquire+0xfd9/0x1b50
[  682.859606]  lock_acquire+0xb4/0x2c0
[  682.859623]  ? rtw_free_stainfo+0x52/0x4a0 [r8723bs]
[  682.859752]  ? mark_held_locks+0x48/0x70
[  682.859769]  ? rtw_free_stainfo+0x4a/0x4a0 [r8723bs]
[  682.859898]  _raw_spin_lock_bh+0x34/0x40
[  682.859914]  ? rtw_free_stainfo+0x52/0x4a0 [r8723bs]
[  682.860039]  rtw_free_stainfo+0x52/0x4a0 [r8723bs]
[  682.860171]  rtw_free_assoc_resources+0x53/0x110 [r8723bs]
[  682.860286]  cfg80211_rtw_disconnect+0x4b/0x70 [r8723bs]
[  682.860397]  cfg80211_disconnect+0x12e/0x2f0 [cfg80211]
[  682.860629]  cfg80211_leave+0x2b/0x40 [cfg80211]
[  682.860836]  cfg80211_netdev_notifier_call+0xa9/0x560 [cfg80211]
[  682.861048]  ? __lock_acquire+0x4dc/0x1b50
[  682.861070]  ? lock_is_held_type+0xa8/0x110
[  682.861089]  ? lock_is_held_type+0xa8/0x110
[  682.861104]  ? find_held_lock+0x2d/0x90
[  682.861120]  ? packet_notifier+0x173/0x300
[  682.861141]  ? lock_release+0xb3/0x250
[  682.861160]  ? packet_notifier+0x192/0x300
[  682.861184]  raw_notifier_call_chain+0x41/0x50
[  682.861205]  __dev_close_many+0x62/0x100
[  682.861224]  dev_close_many+0x7d/0x120
[  682.861245]  unregister_netdevice_many+0x416/0x680
[  682.861264]  ? find_held_lock+0x2d/0x90
[  682.861284]  unregister_netdevice_queue+0xab/0xf0
[  682.861306]  unregister_netdev+0x18/0x20
[  682.861325]  rtw_unregister_netdevs+0x28/0x40 [r8723bs]
[  682.861434]  rtw_dev_remove+0x24/0xd0 [r8723bs]
[  682.861542]  sdio_bus_remove+0x31/0xd0 [mmc_core]
[  682.861615]  device_release_driver_internal+0xf7/0x1d0
[  682.861637]  driver_detach+0x47/0x90
[  682.861656]  bus_remove_driver+0x77/0xd0
[  682.861674]  rtw_drv_halt+0xc/0x678 [r8723bs]
[  682.861782]  __x64_sys_delete_module+0x13f/0x250
[  682.861801]  ? lockdep_hardirqs_on_prepare+0xf3/0x170
[  682.861817]  ? syscall_enter_from_user_mode+0x20/0x70
[  682.861836]  do_syscall_64+0x3a/0x80
[  682.861855]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[  682.861873] RIP: 0033:0x7f6dbe85400b
[  682.861890] Code: 73 01 c3 48 8b 0d 6d 1e 0c 00 f7 d8 64 89
01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa
b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 3d
1e 0c 00 f7 d8 64 89 01 48
[  682.861906] RSP: 002b:00007ffe7a82f538 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0
[  682.861923] RAX: ffffffffffffffda RBX: 000055a64693bd20 RCX: 00007f6dbe85400b
[  682.861935] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055a64693bd88
[  682.861946] RBP: 000055a64693bd20 R08: 0000000000000000 R09: 0000000000000000
[  682.861957] R10: 00007f6dbe8c7ac0 R11: 0000000000000206 R12: 000055a64693bd88
[  682.861967] R13: 0000000000000000 R14: 000055a64693bd88 R15: 00007ffe7a831848

This happens because when we enqueue a frame for
transmission we do it under xmit_priv lock, then calling
rtw_get_stainfo (needed for enqueuing) takes sta_hash_lock
and this leads to the following lock dependency:

xmit_priv->lock -> sta_hash_lock

Turning off a connection will bring to call
rtw_free_assoc_resources which will set up
the inverse dependency:

sta_hash_lock -> xmit_priv_lock

This could lead to a deadlock as lockdep complains.

Fix it by removing the xmit_priv->lock around
rtw_xmitframe_enqueue call inside rtl8723bs_hal_xmit
and put it in a smaller critical section inside
rtw_xmit_classifier, the only place where
xmit_priv data are actually accessed.

Replace spin_{lock,unlock}_bh(pxmitpriv->lock)
in other tx paths leading to rtw_xmitframe_enqueue
call with spin_{lock,unlock}_bh(psta->sleep_q.lock)
- it's not clear why accessing a sleep_q was protected
by a spinlock on xmitpriv->lock.

This way is avoided the same faulty lock nesting
order.

CC: Larry Finger <Larry.Finger@lwfinger.net>
Tested-on: Lenovo Ideapad MiiX 300-10IBY
Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/20210902093559.9779-1-fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: os_dep: use kmemdup instead of kzalloc and memcpy

Fixes coccicheck warning:WARNING opportunity for kmemdup in ioctl_linux.c

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/YTJhwQstKPUYRwN+@user
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove unnecessary parentheses

Remove unnecessary parentheses around a variable to improve
readability.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210830121508.6411-9-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: add missing blank line after declarations

Add a missing blank line after declarations in rtw_macaddr_cfg()
to clear a checkpatch warning.

WARNING: Missing a blank line after declarations

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210830121508.6411-8-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: use ether_addr_copy() in rtw_macaddr_cfg()

Use ether_addr_copy() in rtw_macaddr_cfg() to copy the mac address.
The buffers are properly aligned.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210830121508.6411-7-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: use random default mac address

Use a random default mac address instead of a fixed one to reduce the
likelihood of mac address collision.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210830121508.6411-6-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: use is_*_ether_addr() in rtw_macaddr_cfg()

Use is_broadcast_ether_addr() and is_zero_ether_addr() in
rtw_macaddr_cfg(). The buffer is properly aligned.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210830121508.6411-5-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: use ETH_ALEN

Use ETH_ALEN instead of hard-coding the value for the mac_addr buffer
in struct eeprom_priv.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210830121508.6411-4-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: ensure mac address buffer is properly aligned

Ensure the mac address buffer in struct eeprom_priv is properly
aligned for use with functions from <linux/etherdevice.h>.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210830121508.6411-3-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: use mac_pton() in rtw_macaddr_cfg()

Instead of a custom approach use mac_pton() to convert the mac
address string. With mac_pton() the driver also validates the
input now.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210830121508.6411-2-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove unused function SetBcnCtrlReg()

Remove unused function SetBcnCtrlReg().

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210830092153.9283-5-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove ICType from struct HAL_VERSION

IC type is always 8188E. Remove ICType from struct HAL_VERSION,
all macros that check it and related code.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210830092153.9283-4-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove set but unused variable

The local variable rfPath in Hal_SetAntennaPathPower() and
Hal_SetTxPower() is set but not used. Remove the variable
and related code.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210830092153.9283-3-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove Hal_MPT_CCKTxPowerAdjustbyIndex()

IC Type is always 8188E. Therefore, the test
"if (!IS_92C_SERIAL(pHalData->VersionID))" in
Hal_MPT_CCKTxPowerAdjustbyIndex() is always true and the function
does nothing, remove it.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210830092153.9283-2-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove commented constants from wifi.h

Remove commented constants from wifi.h.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210829180717.15393-2-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove unused constants from wifi.h

The constants WLAN_REASON_PWR_CAPABILITY_NOT_VALID and
WLAN_REASON_SUPPORTED_CHANNEL_NOT_VALID defined in wifi.h
are unused, remove them.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210829180717.15393-1-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: refactor field of struct odm_rf_cal

Refactor the field IQKMatrixRegSetting of struct odm_rf_cal to be not
an array. The driver is for chips that operate in the 2.4 GHz band only.
So only the first element of the array is used and there is no need for
an array.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210829175624.5915-2-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove local variable Indexforchannel

The local variable Indexforchannel in function
odm_TXPowerTrackingCallback_ThermalMeter_8188E() is initilaized to 0
and never changed. Remove the variable and replace its usage with 0.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210829175624.5915-1-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove unnecessary type casts

The field rx_data of struct recv_frame and the local variable pframe
both have type (u8 *). Remove unnecessary type casts to (unsigned char *).

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210829112555.8726-4-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: convert type of second parameter of rtw_*_decrypt()

Convert the type of the second parameter of the rtw_*_decrypt() functions
to struct recv_frame.

All callers of the functions cast the type to (u8 *) and in the functions
it is casted back to the original type. Changing the type of the second
parameter to struct recv_frame avoids these unnecessary casts and improves
readability.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210829112555.8726-3-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: convert type of second parameter of rtw_*_encrypt()

Convert the type of the second parameter of the rtw_*_encrypt() functions
to struct xmit_frame.

All callers of the functions cast the type to (u8 *) and in the functions
it is casted back to the original type. Changing the type of the second
parameter to struct xmit_frame avoids these unnecessary casts and improves
readability.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210829112555.8726-2-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove should_forbid_n_rate()

Function should_forbid_n_rate() is unused, remove it.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210829092502.3658-7-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove is_ap_in_wep()

Function is_ap_in_wep() is unused, remove it.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210829092502.3658-6-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove CAM_empty_entry()

Function CAM_empty_entry() is unused, remove it.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210829092502.3658-5-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove get_bsstype()

Function get_bsstype() is unused, remove it.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210829092502.3658-4-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove rtw_get_oper_choffset()

Function rtw_get_oper_choffset() is unused, remove it.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210829092502.3658-3-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove rtw_get_oper_bw()

Function rtw_get_oper_bw() is unused, remove it.

Acked-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210829092502.3658-2-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove rtl8188e_PHY_ConfigRFWithParaFile()

Function rtl8188e_PHY_ConfigRFWithParaFile() is unused, remove it.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210828170834.31388-2-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove rtl8188e_PHY_ConfigRFWithHeaderFile()

Function rtl8188e_PHY_ConfigRFWithHeaderFile() is not implemented,
remove the declaration from Hal8188EPhyCfg.h.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210828170834.31388-1-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: core: remove condition with no effect

Remove the condition with no effect (if == else) and group multiple
cases which execute same statement in rtw_mlme_ext.c

Reviewed-by: Pavel Skripkin <paskripkin@gmail.com>
Acked-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/YStM2wxtkDAnRemt@user
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: core: remove unused function

Remove unused function proc_get_adapter_state() from rtw_debug.c file.

Acked-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/YSpP0+aHdq3Roleo@user
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8118eu: remove useless parts of judgements from os_dep/ioctl_linux.

Remove the check of the pointer 'pregpriv' that is impossible to be
NULL. There is no need to check if pregpriv is NULL.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: xu xin <xu.xin16@zte.com.cn>
Thanks-to: Pavel Skripkin <paskripkin@gmail.com>
Link: https://lore.kernel.org/r/20210830012811.3384-1-xu.xin16@zte.com.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: os_dep: remove unused static variable

Remove unused static variable rtw_enusbss from os_intfs.c file.

Acked-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/YSoz5Qip12K899SN@user
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: clean up comparsions to NULL

Clean up comparsions to NULL reported by checkpatch.

x == NULL -> !x
x != NULL -> x

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210829154533.11054-1-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove unused _rtw_init_queue() function

remove _rtw_init_queue() left unused by previous commit
in this series.

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/3c03fcfbe799195c84608b05fc54efe921bef4de.1630307025.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: remove unnecessary parentheses

Fix the following post commit hook checkpatch issues:

CHECK: Unnecessary parentheses around pcmdpriv->cmd_queue
103: FILE: drivers/staging/rtl8723bs/core/rtw_cmd.c:169:
+ INIT_LIST_HEAD(&(pcmdpriv->cmd_queue).queue);

CHECK: Unnecessary parentheses around pcmdpriv->cmd_queue
104: FILE: drivers/staging/rtl8723bs/core/rtw_cmd.c:170:
+ spin_lock_init(&(pcmdpriv->cmd_queue).lock);

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/de4fcdb3ff45671333713b27f1dcf376b22f3978.1630307025.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rtl8723bs: unwrap initialization of queues

unwrap initialization of queues to avoid false positive
lockdep warning:

[   27.350258] ============================================
[   27.350267] WARNING: possible recursive locking detected
[   27.350276] 5.14.0-rc6+ #16 Tainted: G         C OE
[   27.350288] --------------------------------------------
[   27.350295] RTW_CMD_THREAD/679 is trying to acquire lock:
[   27.350306] ffffa846c03290c8 (&(pqueue->lock)){+.-.}-{2:2},
at: rtw_alloc_network+0x1b/0xa0 [r8723bs]
[   27.350441]
               but task is already holding lock:
[   27.350448] ffffa846c0329118 (&(pqueue->lock)){+.-.}-{2:2},
at: rtw_update_scanned_network+0x33/0x1d0 [r8723bs]
[   27.350573]
               other info that might help us debug this:
[   27.350581]  Possible unsafe locking scenario:

[   27.350588]        CPU0
[   27.350594]        ----
[   27.350600]   lock(&(pqueue->lock));
[   27.350614]   lock(&(pqueue->lock));
[   27.350627]
                *** DEADLOCK ***

[   27.350634]  May be due to missing lock nesting notation

[   27.350641] 2 locks held by RTW_CMD_THREAD/679:
[   27.350652]  #0: ffffa846c0329038 (&pmlmepriv->lock){+...}-{2:2},
at: rtw_survey_event_callback+0x2d/0xe0 [r8723bs]
[   27.350780]  #1: ffffa846c0329118 (&(pqueue->lock)){+.-.}-{2:2},
at: rtw_update_scanned_network+0x33/0x1d0 [r8723bs]
[   27.350907]
               stack backtrace:
[   27.350916] CPU: 3 PID: 679 Comm: RTW_CMD_THREAD Tainted: G
C OE     5.14.0-rc6+ #16
[   27.350933] Hardware name: LENOVO 80NR/Madrid, BIOS DACN25WW
08/20/2015
[   27.350943] Call Trace:
[   27.350959]  dump_stack_lvl+0x56/0x6f
[   27.350982]  __lock_acquire.cold.79+0x137/0x298
[   27.351012]  lock_acquire+0xb4/0x2c0
[   27.351031]  ? rtw_alloc_network+0x1b/0xa0 [r8723bs]
[   27.351140]  ? rtw_update_scanned_network+0x33/0x1d0 [r8723bs]
[   27.351254]  _raw_spin_lock_bh+0x34/0x40
[   27.351271]  ? rtw_alloc_network+0x1b/0xa0 [r8723bs]
[   27.351378]  rtw_alloc_network+0x1b/0xa0 [r8723bs]
[   27.351488]  rtw_update_scanned_network+0xa5/0x1d0 [r8723bs]
[   27.351605]  rtw_survey_event_callback+0x54/0xe0 [r8723bs]
[   27.351719]  mlme_evt_hdl+0x4e/0x70 [r8723bs]
[   27.351839]  rtw_cmd_thread+0x16c/0x3d0 [r8723bs]
[   27.351945]  ? rtw_stop_cmd_thread+0x50/0x50 [r8723bs]
[   27.352045]  kthread+0x136/0x160
[   27.352064]  ? set_kthread_struct+0x40/0x40
[   27.352083]  ret_from_fork+0x22/0x30

This happens because the wrapping function _rtw_init_queues()
bring lockdep considering all queues as a single one. But
all queues are different with their own lock.

Applied the following semantic patch:

@@
expression a;
@@

-       _rtw_init_queue(&a);
+       INIT_LIST_HEAD(&a.queue);
+       spin_lock_init(&a.lock);

Reported-by: Hans De Goede <hdegoede@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
Link: https://lore.kernel.org/r/c2c3a18cc2b883feab74f150ccbaa4f2cc11995c.1630307025.git.fabioaiuto83@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: wlan-ng: Remove filenames from files

Fix checkpatch warnings about having filenames in the files.

Signed-off-by: Aldas Taraškevičius <aldas60@gmail.com>
Link: https://lore.kernel.org/r/20210828195324.68-1-aldas60@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: pi433: fix docs typos and references to previous struct names

In the comments there where some grammar mistakes and references to
struct names that have gotten renamed over time but not updated
in the comments.

Signed-off-by: Paulo Miguel Almeida <paulo.miguel.almeida.rodenas@gmail.com>
Link: https://lore.kernel.org/r/20210828105633.GA8421@localhost.localdomain
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove rtw_hal_c2h_handler function

Remove rtw_hal_c2h_handler function from hal/hal_intf.c, as well as its
declaration in include/hal_intf.h, and remove its one remaining caller
within core/rtw_cmd.c.

This function was a wrapper function, then simplified to always return
_FAIL. Since it has no further use, remove it, as part of ongoing
efforts to simplify and remove the HAL layer of the driver.

Acked-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Acked-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210829234541.946-4-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: simplify c2h_evt_hdl function

Simplify c2h_evt_hdl function by removing majority of its code. The
function always returned _FAIL anyway, due to the wrapper function it
calls always returning _FAIL, and its one caller doesn't use the return
value, so this function should just have a return type of void.

Leave the call to c2h_evt_read in place, as without it, event handling
semantics of the driver would be changed, despite nothing actually being
done with the event.

Acked-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Acked-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210829234541.946-3-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: remove c2h_handler field from struct hal_ops

Remove c2h_handler function pointer field from struct hal_ops in
include/hal_intf.h, as it is never set in this driver, and remove
the check for a non-NULL value in the rtw_hal_c2h_handler wrapper
function in hal/hal_intf.c as well. As the function always returns
_FAIL anyway, just modify it to do this unconditionally.

The motivation for removing this field is that it is more code from
the unwanted HAL layer that can be stripped out.

Acked-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Acked-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Link: https://lore.kernel.org/r/20210829234541.946-2-phil@philpotter.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: r8188eu: core: remove null check before vfree

Remove NULL check. NULL check before freeing function is not needed.
Correct the indentation.

Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Michael Straube <straube.linux@gmail.com>
Signed-off-by: Saurav Girepunje <saurav.girepunje@gmail.com>
Link: https://lore.kernel.org/r/YSu9GQa1A3s6FYQx@user
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Linux 5.15-rc1

Merge tag 'perf-tools-for-v5.15-2021-09-11' of git://git./linux/kernel/git/acme/linux

Pull more perf tools updates from Arnaldo Carvalho de Melo:

 - Add missing fields and remove some duplicate fields when printing a
   perf_event_attr.

 - Fix hybrid config terms list corruption.

 - Update kernel header copies, some resulted in new kernel features
   being automagically added to 'perf trace' syscall/tracepoint argument
   id->string translators.

 - Add a file generated during the documentation build to .gitignore.

 - Add an option to build without libbfd, as some distros, like Debian
   consider its ABI unstable.

 - Add support to print a textual representation of IBS raw sample data
   in 'perf report'.

 - Fix bpf 'perf test' sample mismatch reporting

 - Fix passing arguments to stackcollapse report in a 'perf script'
   python script.

 - Allow build-id with trailing zeros.

 - Look for ImageBase in PE file to compute .text offset.

* tag 'perf-tools-for-v5.15-2021-09-11' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (25 commits)
  tools headers UAPI: Update tools's copy of drm.h headers
  tools headers UAPI: Sync drm/i915_drm.h with the kernel sources
  tools headers UAPI: Sync linux/fs.h with the kernel sources
  tools headers UAPI: Sync linux/in.h copy with the kernel sources
  perf tools: Add an option to build without libbfd
  perf tools: Allow build-id with trailing zeros
  perf tools: Fix hybrid config terms list corruption
  perf tools: Factor out copy_config_terms() and free_config_terms()
  perf tools: Fix perf_event_attr__fprintf() missing/dupl. fields
  perf tools: Ignore Documentation dependency file
  perf bpf: Provide a weak btf__load_from_kernel_by_id() for older libbpf versions
  tools include UAPI: Update linux/mount.h copy
  perf beauty: Cover more flags in the  move_mount syscall argument beautifier
  tools headers UAPI: Sync linux/prctl.h with the kernel sources
  tools include UAPI: Sync sound/asound.h copy with the kernel sources
  tools headers UAPI: Sync linux/kvm.h with the kernel sources
  tools headers UAPI: Sync x86's asm/kvm.h with the kernel sources
  perf report: Add support to print a textual representation of IBS raw sample data
  perf report: Add tools/arch/x86/include/asm/amd-ibs.h
  perf env: Add perf_env__cpuid, perf_env__{nr_}pmu_mappings
  ...

Merge tag 'compiler-attributes-for-linus-v5.15-rc1-v2' of git://github.com/ojeda/linux

Pull compiler attributes updates from Miguel Ojeda:

 - Fix __has_attribute(__no_sanitize_coverage__) for GCC 4 (Marco Elver)

 - Add Nick as Reviewer for compiler_attributes.h (Nick Desaulniers)

 - Move __compiletime_{error|warning} (Nick Desaulniers)

* tag 'compiler-attributes-for-linus-v5.15-rc1-v2' of git://github.com/ojeda/linux:
  compiler_attributes.h: move __compiletime_{error|warning}
  MAINTAINERS: add Nick as Reviewer for compiler_attributes.h
  Compiler Attributes: fix __has_attribute(__no_sanitize_coverage__) for GCC 4

Merge tag 'auxdisplay-for-linus-v5.15-rc1' of git://github.com/ojeda/linux

Pull auxdisplay updates from Miguel Ojeda:
 "An assortment of improvements for auxdisplay:

   - Replace symbolic permissions with octal permissions (Jinchao Wang)

   - ks0108: Switch to use module_parport_driver() (Andy Shevchenko)

   - charlcd: Drop unneeded initializers and switch to C99 style (Andy
     Shevchenko)

   - hd44780: Fix oops on module unloading (Lars Poeschel)

   - Add I2C gpio expander example (Ralf Schlatterbeck)"

* tag 'auxdisplay-for-linus-v5.15-rc1' of git://github.com/ojeda/linux:
  auxdisplay: Replace symbolic permissions with octal permissions
  auxdisplay: ks0108: Switch to use module_parport_driver()
  auxdisplay: charlcd: Drop unneeded initializers and switch to C99 style
  auxdisplay: hd44780: Fix oops on module unloading
  auxdisplay: Add I2C gpio expander example

Merge tag 'smp-urgent-2021-09-12' of git://git./linux/kernel/git/tip/tip

Pull CPU hotplug updates from Thomas Gleixner:
 "Updates for the SMP and CPU hotplug:

   - Remove DEFINE_SMP_CALL_CACHE_FUNCTION() which is a left over of the
     original hotplug code and now causing trouble with the ARM64 cache
     topology setup due to the pointless SMP function call.

     It's not longer required as the hotplug callbacks are guaranteed to
     be invoked on the upcoming CPU.

   - Remove the deprecated and now unused CPU hotplug functions

   - Rewrite the CPU hotplug API documentation"

* tag 'smp-urgent-2021-09-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Documentation: core-api/cpuhotplug: Rewrite the API section
  cpu/hotplug: Remove deprecated CPU-hotplug functions.
  thermal: Replace deprecated CPU-hotplug functions.
  drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION()

Merge tag 'char-misc-5.15-rc1-lkdtm' of git://git./linux/kernel/git/gregkh/char-misc

Pull misc driver fix from Greg KH:
 "Here is a single patch for 5.15-rc1, for the lkdtm misc driver.

  It resolves a build issue that many people were hitting with your
  current tree, and Kees and others felt would be good to get merged
  before -rc1 comes out, to prevent them from having to constantly hit
  it as many development trees restart on -rc1, not older -rc releases.

  It has NOT been in linux-next, but has passed 0-day testing and looks
  'obviously correct' when reviewing it locally :)"

* tag 'char-misc-5.15-rc1-lkdtm' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  lkdtm: Use init_uts_ns.name instead of macros

Merge tag 'for-linus-5.15-1' of git://github.com/cminyard/linux-ipmi

Pull IPMI updates from Corey Minyard:
 "A couple of very minor fixes for style and rate limiting.

  Nothing big, but probably needs to go in"

* tag 'for-linus-5.15-1' of git://github.com/cminyard/linux-ipmi:
  char: ipmi: use DEVICE_ATTR helper macro
  ipmi: rate limit ipmi smi_event failure message

Merge tag 'sched_urgent_for_v5.15_rc1' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Borislav Petkov:

 - Make sure the idle timer expires in hardirq context, on PREEMPT_RT

 - Make sure the run-queue balance callback is invoked only on the
   outgoing CPU

* tag 'sched_urgent_for_v5.15_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched: Prevent balance_push() on remote runqueues
  sched/idle: Make the idle timer expire in hard interrupt context

Merge tag 'locking_urgent_for_v5.15_rc1' of git://git./linux/kernel/git/tip/tip

Pull locking fixes from Borislav Petkov:

 - Fix the futex PI requeue machinery to not return to userspace in
   inconsistent state

 - Avoid a potential null pointer dereference in the ww_mutex deadlock
   check

 - Other smaller cleanups and optimizations

* tag 'locking_urgent_for_v5.15_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/rtmutex: Fix ww_mutex deadlock check
  futex: Remove unused variable 'vpid' in futex_proxy_trylock_atomic()
  futex: Avoid redundant task lookup
  futex: Clarify comment for requeue_pi_wake_futex()
  futex: Prevent inconsistent state and exit race
  futex: Return error code instead of assigning it without effect
  locking/rwsem: Add missing __init_rwsem() for PREEMPT_RT

Merge tag 'timers_urgent_for_v5.15_rc1' of git://git./linux/kernel/git/tip/tip

Pull timer fix from Borislav Petkov:

 - Handle negative second values properly when converting a timespec64
   to nanoseconds.

* tag 'timers_urgent_for_v5.15_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  time: Handle negative seconds correctly in timespec64_to_ns()

Merge branch 'misc.namei' of git://git./linux/kernel/git/viro/vfs

Pull namei updates from Al Viro:
 "Clearing fallout from mkdirat in io_uring series. The fix in the
  kern_path_locked() patch plus associated cleanups"

* 'misc.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  putname(): IS_ERR_OR_NULL() is wrong here
  namei: Standardize callers of filename_create()
  namei: Standardize callers of filename_lookup()
  rename __filename_parentat() to filename_parentat()
  namei: Fix use after free in kern_path_locked

Merge tag '5.15-rc-cifs-part2' of git://git.samba.org/sfrench/cifs-2.6

Pull smbfs updates from Steve French:
 "cifs/smb3 updates:

   - DFS reconnect fix

   - begin creating common headers for server and client

   - rename the cifs_common directory to smbfs_common to be more
     consistent ie change use of the name cifs to smb (smb3 or smbfs is
     more accurate, as the very old cifs dialect has long been
     superseded by smb3 dialects).

  In the future we can rename the fs/cifs directory to fs/smbfs.

  This does not include the set of multichannel fixes nor the two
  deferred close fixes (they are still being reviewed and tested)"

* tag '5.15-rc-cifs-part2' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: properly invalidate cached root handle when closing it
  cifs: move SMB FSCTL definitions to common code
  cifs: rename cifs_common to smbfs_common
  cifs: update FSCTL definitions

Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:

 - vduse driver ("vDPA Device in Userspace") supporting emulated virtio
   block devices

 - virtio-vsock support for end of record with SEQPACKET

 - vdpa: mac and mq support for ifcvf and mlx5

 - vdpa: management netlink for ifcvf

 - virtio-i2c, gpio dt bindings

 - misc fixes and cleanups

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (39 commits)
  Documentation: Add documentation for VDUSE
  vduse: Introduce VDUSE - vDPA Device in Userspace
  vduse: Implement an MMU-based software IOTLB
  vdpa: Support transferring virtual addressing during DMA mapping
  vdpa: factor out vhost_vdpa_pa_map() and vhost_vdpa_pa_unmap()
  vdpa: Add an opaque pointer for vdpa_config_ops.dma_map()
  vhost-iotlb: Add an opaque pointer for vhost IOTLB
  vhost-vdpa: Handle the failure of vdpa_reset()
  vdpa: Add reset callback in vdpa_config_ops
  vdpa: Fix some coding style issues
  file: Export receive_fd() to modules
  eventfd: Export eventfd_wake_count to modules
  iova: Export alloc_iova_fast() and free_iova_fast()
  virtio-blk: remove unneeded "likely" statements
  virtio-balloon: Use virtio_find_vqs() helper
  vdpa: Make use of PFN_PHYS/PFN_UP/PFN_DOWN helper macro
  vsock_test: update message bounds test for MSG_EOR
  af_vsock: rename variables in receive loop
  virtio/vsock: support MSG_EOR bit processing
  vhost/vsock: support MSG_EOR bit processing
  ...

Merge tag 'riscv-for-linus-5.15-mw1' of git://git./linux/kernel/git/riscv/linux

Pull more RISC-V updates from Palmer Dabbelt:

 - A pair of defconfig additions, for NVMe and the EFI filesystem
   localization options.

 - A larger address space for stack randomization.

 - A cleanup to our install rules.

 - A DTS update for the Microchip Icicle board, to fix the serial
   console.

 - Support for build-time table sorting, which allows us to have
   __ex_table read-only.

* tag 'riscv-for-linus-5.15-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: Move EXCEPTION_TABLE to RO_DATA segment
  riscv: Enable BUILDTIME_TABLE_SORT
  riscv: dts: microchip: mpfs-icicle: Fix serial console
  riscv: move the (z)install rules to arch/riscv/Makefile
  riscv: Improve stack randomisation on RV64
  riscv: defconfig: enable NLS_CODEPAGE_437, NLS_ISO8859_1
  riscv: defconfig: enable BLK_DEV_NVME

Merge branch 'for-5.15' of git://git./linux/kernel/git/jlawall/linux

Pull coccinelle updates from Julia Lawall:
 "These changes update some existing semantic patches with
  respect to some recent changes in the kernel.

  Specifically, the change to kvmalloc.cocci searches for
  kfree_sensitive rather than kzfree, and the change to
  use_after_iter.cocci adds list_entry_is_head as a valid
  use of a list iterator index variable after the end of
  the loop"

* 'for-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux:
  scripts: coccinelle: allow list_entry_is_head() to use pos
  coccinelle: api: rename kzfree to kfree_sensitive

tools headers UAPI: Update tools's copy of drm.h headers

Picking the changes from:

  17ce9c61c71cbc0d ("drm: document DRM_IOCTL_MODE_RMFB")

Doesn't result in any tooling changes:

  $ tools/perf/trace/beauty/drm_ioctl.sh  > before
  $ cp include/uapi/drm/drm.h tools/include/uapi/drm/drm.h
  $ tools/perf/trace/beauty/drm_ioctl.sh  > after
  $ diff -u before after

Silencing these perf build warnings:

  Warning: Kernel ABI header at 'tools/include/uapi/drm/drm.h' differs from latest version at 'include/uapi/drm/drm.h'
  diff -u tools/include/uapi/drm/drm.h include/uapi/drm/drm.h

Cc: Simon Ser <contact@emersion.fr>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools headers UAPI: Sync drm/i915_drm.h with the kernel sources

To pick the changes in:

  b65a9489730a2494 ("drm/i915/userptr: Probe existence of backing struct pages upon creation")
  ee242ca704d38699 ("drm/i915/guc: Implement GuC priority management")
  81340cf3bddded4f ("drm/i915/uapi: reject set_domain for discrete")
  7961c5b60f23dff5 ("drm/i915: Add TTM offset argument to mmap.")
  aef7b67a79564f6c ("drm/i915/uapi: convert drm_i915_gem_userptr to kernel doc")
  e7737b67ab46ee0e ("drm/i915/uapi: reject caching ioctls for discrete")
  3aa8c57fe25a9247 ("drm/i915/uapi: convert drm_i915_gem_set_domain to kernel doc")
  289f5a72009b8f67 ("drm/i915/uapi: convert drm_i915_gem_caching to kernel doc")
  4a766ae40ec83301 ("drm/i915: Drop the CONTEXT_CLONE API (v2)")
  6ff6d61dd2a943bd ("drm/i915: Drop I915_CONTEXT_PARAM_NO_ZEROMAP")
  fe4751c3d513ff4f ("drm/i915: Drop I915_CONTEXT_PARAM_RINGSIZE")
  577729533cdc4e37 ("drm/i915: Document the Virtual Engine uAPI")
  c649432e86ca677d ("drm/i915: Fix busy ioctl commentary")

That doesn't result in any changes to tooling as no new ioctl were
added (at least not perceived by tools/perf/trace/beauty/drm_ioctl.sh).

Addressing this perf build warning:

  Warning: Kernel ABI header at 'tools/include/uapi/drm/i915_drm.h' differs from latest version at 'include/uapi/drm/i915_drm.h'
  diff -u tools/include/uapi/drm/i915_drm.h include/uapi/drm/i915_drm.h

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Cc: John Harrison <John.C.Harrison@Intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>