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Kevin Cernekee [Wed, 12 Nov 2014 20:53:59 +0000 (12:53 -0800)]
serial: core: Add big-endian iotype
Since most drivers interpret UPIO_MEM32 to mean "little-endian" and use
readl/writel to access the registers, add a parallel UPIO_MEM32BE to
request the use of big-endian MMIO accessors (ioread32be/iowrite32be).
Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Robert Baldyga [Mon, 24 Nov 2014 06:56:24 +0000 (07:56 +0100)]
serial: samsung: use port->fifosize instead of hardcoded values
Hardcoded FIFO size can cause hardware performance limitation.
Using real size value provides better FIFO usage.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Robert Baldyga [Mon, 24 Nov 2014 06:56:23 +0000 (07:56 +0100)]
serial: samsung: prefer to use fifosize from driver data
If we have fifosize set in driver data we prefer to use it instead of default
fifosize value (which is always 16). If there is defined fifosize for particular
serial we prefer to use it, otherwise we use value from info, which is
common for all serials on given platform.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Robert Baldyga [Mon, 24 Nov 2014 06:56:22 +0000 (07:56 +0100)]
serial: samsung: fix style problems
Split lines longer than 80 chars and remove unnecessary whitespaces.
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Robert Baldyga [Mon, 24 Nov 2014 06:56:21 +0000 (07:56 +0100)]
serial: samsung: wait for transfer completion before clock disable
This patch adds waiting until transmit buffer and shifter will be empty
before clock disabling.
Without this fix it's possible to have clock disabled while data was
not transmited yet, which causes unproper state of TX line and problems
in following data transfers.
Cc: <stable@vger.kernel.org> # v2.6.26+
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Julia Lawall [Thu, 20 Nov 2014 17:33:59 +0000 (18:33 +0100)]
serial: icom: fix error return code
Return a negative error code on failure.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Tue, 18 Nov 2014 10:18:02 +0000 (11:18 +0100)]
serial: tegra: clean up tty-flag assignments
The tty break and error flags are not bit masks so do not to use bitwise
OR when assigning them.
Note that there is no functional change due to the if-else construct and
flag having been initialised to zero (TTY_NORMAL).
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Hung [Wed, 19 Nov 2014 05:22:27 +0000 (13:22 +0800)]
serial: Fix io address assign flow with Fintek PCI-to-UART Product
The original driver fixed the io address with 0xe000+idx*8,
but real io address assigned from BIOS is dynamically from
read PCI configure space 0x24, 0x20, 0x1c.
The Fintek F81504/F81508/F81512 maybe malfunction without
this patch and malfunction surely when more then 1 PCI card.
Signed-off-by: Peter Hung <hpeter+linux_kernel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Janusz Uzycki [Tue, 18 Nov 2014 17:37:13 +0000 (18:37 +0100)]
serial: mxs-auart: fix tx_empty against shift register
tx_empty() should test whether both the transmitter fifo and shifter
for the port is empty, ie. the whole last char was transmitted.
The shift register is empty if AUART_STAT_BUSY is cleared.
The patch fixes the function against the shift register.
According to i.MX23 and i.MX28 Reference Manual:
AUART_STAT_TXFE:
TX FIFO or transmit holding register is empty.
AUART_STAT_BUSY:
AUART still transmits bits.
The BUSY signal goes HIGH as soon as the data is written to the
transmit FIFO (that is, the FIFO is non-empty) and remains asserted
HIGH while data is being transmitted.
BUSY is negated only when the transmit FIFO is empty, and the last
character has been transmitted from the shift register, including
the stop bits.
Signed-off-by: Janusz Uzycki <j.uzycki@elproma.com.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Janusz Uzycki [Fri, 14 Nov 2014 22:24:33 +0000 (23:24 +0100)]
serial: mxs-auart: fix gpio change detection on interrupt
mxs_auart_modem_status() did't detect gpio's state change
because s->mctrl_prev was modified before by mctrl_gpio_get().
The patch introduces mctrl_temp variable to fix the bug.
Signed-off-by: Janusz Uzycki <j.uzycki@elproma.com.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fabio Estevam [Wed, 12 Nov 2014 22:32:49 +0000 (20:32 -0200)]
serial: mxs-auart: Fix mxs_auart_set_ldisc()
Commit
732a84a037a4 ("serial: core: Pass termios to set_ldisc() notifications")
changed the set_ldisc prototype.
At the time of this commit the mxs_auart driver did not implement set_ldisc,
so that's why it has not been converted.
Adapt also mxs_auart_set_ldisc() so that the following build warning can be
fixed:
drivers/tty/serial/mxs-auart.c:962:2: warning: initialization from
incompatible pointer type
.set_ldisc = mxs_auart_set_ldisc,
^
drivers/tty/serial/mxs-auart.c:962:2: warning: (near initialization
for 'mxs_auart_ops.set_ldisc')
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Tested-by: Janusz Uzycki <j.uzycki@elproma.com.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
David Daney [Fri, 14 Nov 2014 14:26:19 +0000 (17:26 +0300)]
serial: 8250_dw: Use 64-bit access for OCTEON.
Although the existing code appears to work on most hardware, the
hardware designers tell us that 8-bit access to the registers is not
guaranteed to be reliable. Also the OCTEON simulation environments
prohibit 8-bit accesses.
For these reasons, we use __raw_readq/__raw_writeq for OCTEON. This
code is protected with #ifdef CONFIG_64BIT so it still builds under
configurations lacking readq/writeq.
We can get rid of the #ifdef __BIG_ENDIAN, as under 64-bit accesses,
OCTEON is byte order invariant.
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@auriga.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fabio Estevam [Wed, 12 Nov 2014 17:55:07 +0000 (15:55 -0200)]
serial: imx: Fix warning when building 'allmodconfig'
When CONFIG_SERIAL_IMX_CONSOLE=n and CONFIG_CONSOLE_POLL=y we get the following
build warning:
drivers/tty/serial/imx.c:306:13: warning: 'imx_port_ucrs_save' defined but not used [-Wunused-function]
drivers/tty/serial/imx.c:315:13: warning: 'imx_port_ucrs_restore' defined but not used [-Wunused-function]
imx_port_ucrs_save/restore are only used under CONFIG_SERIAL_IMX_CONSOLE, so
their definitions should be also be protected only by CONFIG_SERIAL_IMX_CONSOLE.
This was detected when building 'allmodconfig'.
Reported-by: Olof's autobuilder <build@lixom.net>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jiri Slaby [Wed, 12 Nov 2014 10:55:25 +0000 (11:55 +0100)]
tty: bfin, define inlined structures
struct bfin_serial_port contains structs circ_buf, timer_list, and
work_struct directly (not pointers). This means that these structures
have to be defined completely to be inlined in struct
bfin_serial_port.
So instead of struct declarations, define the structures by including
proper headers. They were pulled in by linux/serial_core.h or others
until now. But experimenting with circ_buf removal from serial_core,
struct circ_buf becomes undefined in bfin_serial:
In file included from arch/blackfin/kernel/debug-mmrs.c:21:0:
arch/blackfin/include/asm/bfin_serial.h:44:18: error: field 'rx_dma_buf' has incomplete type
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sebastian Andrzej Siewior [Wed, 12 Nov 2014 09:28:34 +0000 (10:28 +0100)]
tty: serial: omap_serial: line is unsigned, don't check < 0
Dan Carpenter reported:
|drivers/tty/serial/8250/8250_omap.c:1025 omap8250_probe()
|warn: unsigned 'up.port.line' is never less than zero.
|1025 if (up.port.line < 0) {
Since of_alias_get_id() and pdev->id can get negative I check for the
error via ret variable.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sebastian Andrzej Siewior [Wed, 12 Nov 2014 09:28:33 +0000 (10:28 +0100)]
tty: serial: 8250: omap: line is unsigned, don't check < 0
Dan Carpenter reported:
|drivers/tty/serial/8250/8250_omap.c:1025 omap8250_probe()
|warn: unsigned 'up.port.line' is never less than zero.
|1025 if (up.port.line < 0) {
I (wrongly) assumed that line is an int and compiler didn't complain nor
did sparse. Since of_alias_get_id() and pdev->id can get negative I
check for the error via ret variable.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Axel Lin [Mon, 10 Nov 2014 08:05:03 +0000 (16:05 +0800)]
tty: serial: men_z135_uart: Add terminating entry for men_z135_ids
The mcb_device_id table is supposed to be zero-terminated.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Qipan Li [Tue, 11 Nov 2014 12:44:58 +0000 (20:44 +0800)]
serial: sirf: add a new uart type support
in CSR A7DA SoC, uart6 located at BT module and it need multiple clock
sources, so for "sirf,marco-bt-uart" compatible uarts, drivers take 3
clock sources and enable them.
this patch also replaces clk_get by devm_clk_get function and fix DT
binding document in which we missed to fix when we added marco platform
in commit
909102db44f "serial: sirf: add support for Marco chip".
Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Joe Perches [Mon, 10 Nov 2014 06:46:35 +0000 (22:46 -0800)]
tty: pr_warning->pr_warn and logging neatening
Convert the pr_warning to the more common pr_warn.
Other miscellanea:
o Convert unusual PR_FMT define and uses to pr_fmt
o Remove unnecessary OOM message
o Fix grammar in an error message
o Convert a pr_warning with a KERN_ERR to pr_err
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Zapalowicz [Sun, 9 Nov 2014 01:22:20 +0000 (02:22 +0100)]
serial: jsm: Fix unnecessary space before function ptr arguments
This commit deals with the checkpatch warning "Unnecessary space before
function pointer arguments".
Signed-off-by: Konrad Zapalowicz <bergo.torino@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Zapalowicz [Sun, 9 Nov 2014 01:22:19 +0000 (02:22 +0100)]
serial: jsm: Replace magic value with the proper define
The changed function flushes the tx UART and the '4' corresponds to the
UART_FCR_CLEAR_XMIT value. This commit replaces the magic number with
this define.
Signed-off-by: Konrad Zapalowicz <bergo.torino@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Zapalowicz [Sun, 9 Nov 2014 01:22:18 +0000 (02:22 +0100)]
serial: jsm: Fix the alignment of the switch satement
This commit fixes the alignment of the 'case's i the switch statement.
Signed-off-by: Konrad Zapalowicz <bergo.torino@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Zapalowicz [Sun, 9 Nov 2014 01:22:17 +0000 (02:22 +0100)]
serial: jsm: Remove unnecessary if statement
The flow of {neo,cls}_param() shows that at this stage the baud rate
has a non-zero value. This fact makes the if clausule obsolete and
acknowledges it's removal.
Signed-off-by: Konrad Zapalowicz <bergo.torino@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Zapalowicz [Sun, 9 Nov 2014 01:22:16 +0000 (02:22 +0100)]
serial: jsm: Remove unnecessary parameter from clear_break()
The 'force' parameter to the {cls,neo}_send_break() function has been
removed because it has not been used. The client to this API (the tty
code) always called this function with only one value.
Signed-off-by: Konrad Zapalowicz <bergo.torino@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nobuhiro Iwamatsu [Wed, 19 Nov 2014 22:58:27 +0000 (07:58 +0900)]
serial: sh-sci: Change checking for error rate of HSCIF
This changes negative values of error rate to be checked, because these
values are valid as error rate. And this changes in the process of adopting
a value close to 0.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Geert Uytterhoeven [Fri, 14 Nov 2014 15:59:32 +0000 (16:59 +0100)]
serial: sh-sci: Add device tree support for r7s72100
Simply document the new compat string (and keep the list sorted by SoC).
There appears to be no need for a driver update.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ulrich Hecht [Fri, 14 Nov 2014 15:59:31 +0000 (16:59 +0100)]
serial: sh-sci: Add device tree support for r8a7794
Simply document the new compat string.
There appears to be no need for a driver update.
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
[geert: Reworded to match previous commits]
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Frank Rowand [Fri, 14 Nov 2014 22:07:15 +0000 (14:07 -0800)]
tty: serial: msm_serial: document DT alias
Update devicetree binding for msm_serial to reflect msm_serial_probe()
getting line id (port number) from the serialN alias.
Signed-off-by: Frank Rowand <frank.rowand@sonymobile.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stephen Boyd [Fri, 14 Nov 2014 18:39:21 +0000 (10:39 -0800)]
tty: serial: msm_serial: Don't require DT aliases
If there isn't a DT alias then of_alias_get_id() will return
-ENODEV. This will cause the msm_serial driver to fail probe,
when we want to keep the previous behavior where we generated a
dynamic line number at probe time. Restore this behavior by
generating a dynamic id if the line number is still negative
after checking for an alias or in the non-DT case looking at the
.id field of the platform device.
Reported-by: Kevin Hilman <khilman@kernel.org>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Hurley [Tue, 11 Nov 2014 16:20:56 +0000 (11:20 -0500)]
vt: Fix build breakage when !CONFIG_VT_CONSOLE
Commit
68952076e9226cc23ebce66d3fc2fdb8b6c04c30 ("vt: Remove
vt_get_kmsg_redirect() from uapi header") fails to compile if
!CONFIG_VT_CONSOLE.
Move macro definition for vt_get_kmsg_redirect() up with file-scope
function declarations.
Reported-by: Jim Davis <jim.epost@gmail.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Tue, 11 Nov 2014 05:22:01 +0000 (14:22 +0900)]
Revert "serial: of-serial: fetch line number from DT"
This reverts commit
1bd8324535ec1ff44aef55c0e40b9e7d56b310fb.
To quote Olof:
This commit broke a whole lot of tegra boards in last night's
-next here. In particular, I've been looking at
tegra20-seaboard, which now doesn't boot with console any more.
Breaking existing systems is bad.
Reported-by: Olof Johansson <olof@lixom.net>
Cc: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Mon, 10 Nov 2014 03:42:04 +0000 (12:42 +0900)]
Merge 3.18-rc4 into tty-next.
This resolves a merge issue with drivers/tty/serial/8250/8250_mtk.c
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linus Torvalds [Sun, 9 Nov 2014 22:55:29 +0000 (14:55 -0800)]
Linux 3.18-rc4
Linus Torvalds [Sun, 9 Nov 2014 22:49:56 +0000 (14:49 -0800)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- enable bpf syscall for compat
- cpu_suspend fix when checking the idle state type
- defconfig update
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: defconfig: update defconfig for 3.18
arm64: compat: Enable bpf syscall
arm64: psci: fix cpu_suspend to check idle state type for index
Linus Torvalds [Sun, 9 Nov 2014 22:46:36 +0000 (14:46 -0800)]
Merge tag 'armsoc-for-rc4' of git://git./linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"Another quiet week:
- a fix to silence edma probe error on non-supported platforms from
Arnd
- a fix to enable the PL clock for Parallella, to make mainline
usable with the SDK.
- a somewhat verbose fix for the PLL clock tree on VF610
- enabling of SD/MMC on one of the VF610-based boards (for testing)
- a fix for i.MX where CONFIG_SPI used to be implicitly enabled and
now needs to be added to the defconfig instead
- another maintainer added for bcm2835: Lee Jones"
* tag 'armsoc-for-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: dts: zynq: Enable PL clocks for Parallella
dma: edma: move device registration to platform code
ARM: dts: vf610: add SD node to cosmic dts
MAINTAINERS: update bcm2835 entry
ARM: imx: Fix the removal of CONFIG_SPI option
ARM: imx: clk-vf610: define PLL's clock tree
Linus Torvalds [Sun, 9 Nov 2014 22:33:49 +0000 (14:33 -0800)]
Merge branch 'devicetree/merge' of git://git./linux/kernel/git/glikely/linux
Pull devicetree bugfix from Grant Likely:
"One buffer overflow bug that shouldn't be left around"
* 'devicetree/merge' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux:
of: Fix overflow bug in string property parsing functions
Linus Torvalds [Sun, 9 Nov 2014 22:30:24 +0000 (14:30 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs
Pull btrfs fix from Chris Mason:
"It's a one liner for an error cleanup path that leads to crashes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: fix kfree on list_head in btrfs_lookup_csums_range error cleanup
Linus Torvalds [Sun, 9 Nov 2014 22:11:58 +0000 (14:11 -0800)]
Merge tag 'driver-core-3.18-rc4' of git://git./linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are 3 tiny fixes for 3.18-rc4.
One fixes up a long-stading race condition in the driver core for
removing directories in /sys/devices/virtual/ and the other 2 fix up
the wording of a new Kconfig option that was added in 3.18-rc1"
* tag 'driver-core-3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
tiny: rename ENABLE_DEV_COREDUMP to ALLOW_DEV_COREDUMP
tiny: reverse logic for DISABLE_DEV_COREDUMP
sysfs: driver core: Fix glue dir race condition by gdp_mutex
Linus Torvalds [Sun, 9 Nov 2014 22:11:07 +0000 (14:11 -0800)]
Merge tag 'staging-3.18-rc4' of git://git./linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are some staging/iio fixes for 3.18-rc4.
Nothing major, just a few bugfixes of things that have been reported"
* tag 'staging-3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging:iio:
ade7758: Remove "raw" from channel name
staging:iio:
ade7758: Fix check if channels are enabled in prenable
staging:iio:
ade7758: Fix NULL pointer deref when enabling buffer
iio: as3935: allocate correct iio_device size
io: accel: kxcjk-1013: Fix iio_event_spec direction
iio: tsl4531: Fix compiler error when CONFIG_PM_OPS is not defined
iio: adc: mxs-lradc: Disable the clock on probe failure
iio: st_sensors: Fix buffer copy
staging:iio:ad5933: Drop "raw" from channel names
staging:iio:ad5933: Fix NULL pointer deref when enabling buffer
Linus Torvalds [Sun, 9 Nov 2014 22:07:30 +0000 (14:07 -0800)]
Merge tag 'tty-3.18-rc4' of git://git./linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some tiny serial/tty fixes for 3.18-rc4 that resolve some
reported issues"
* tag 'tty-3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: Fix pty master poll() after slave closes v2
serial: of-serial: fix uninitialized kmalloc variable
tty/vt: don't set font mappings on vc not supporting this
tty: serial: 8250_mtk: Fix quot calculation
tty: Prevent "read/write wait queue active!" log flooding
tty: Fix high cpu load if tty is unreleaseable
serial: Fix divide-by-zero fault in uart_get_divisor()
Linus Torvalds [Sun, 9 Nov 2014 22:05:53 +0000 (14:05 -0800)]
Merge tag 'usb-3.18-rc4' of git://git./linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some USB fixes for 3.18-rc4.
Just a bunch of little fixes resolving reported issues and new device
ids for existing drivers. Full details are in the shortlog"
* tag 'usb-3.18-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (26 commits)
USB: Update default usb-storage delay_use value in kernel-parameters.txt
USB: cdc-acm: add quirk for control-line state requests
phy: omap-usb2: Enable runtime PM of omap-usb2 phy properly
USB: storage: Fix timeout in usb_stor_euscsi_init() and usb_stor_huawei_e220_init()
USB: cdc-acm: only raise DTR on transitions from B0
Revert "storage: Replace magic number with define in usb_stor_euscsi_init()"
usb: core: notify disconnection when core detects disconnect
usb: core: need to call usb_phy_notify_connect after device setup
uas: Add US_FL_NO_ATA_1X quirk for 2 more Seagate models
xhci: no switching back on non-ULT Haswell
USB: quirks: enable device-qualifier quirk for yet another Elan touchscreen
USB: quirks: enable device-qualifier quirk for another Elan touchscreen
MAINTAINERS: Remove duplicate entry for usbip driver
usb: storage: fix build warnings !CONFIG_PM
usb: Remove references to non-existent PLAT_S5P symbol
uas: Add NO_ATA_1X for VIA VL711 devices
xhci: Disable streams on Asmedia 1042 xhci controllers
USB: HWA: fix a warning message
uas: Add US_FL_NO_ATA_1X quirk for 1 more Seagate model
usb-storage: handle a skipped data phase
...
Andreas Färber [Thu, 6 Nov 2014 17:22:10 +0000 (18:22 +0100)]
ARM: dts: zynq: Enable PL clocks for Parallella
The Parallella board comes with a U-Boot bootloader that loads one of
two predefined FPGA bitstreams before booting the kernel. Both define an
AXI interface to the on-board Epiphany processor.
Enable clocks FCLK0..FCLK3 for the Programmable Logic by default.
Otherwise accessing, e.g., the ESYSRESET register freezes the board,
as seen with the Epiphany SDK tools e-reset and e-hw-rev, using /dev/mem.
Cc: <stable@vger.kernel.org> # 3.17.x
Signed-off-by: Andreas Färber <afaerber@suse.de>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Linus Torvalds [Sat, 8 Nov 2014 17:32:29 +0000 (09:32 -0800)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux
Pull i2c bugfixes from Wolfram Sang:
"One bigger cleanup (FSF address removal) and two bugfixes for I2C"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: core: Dispose OF IRQ mapping at client removal time
i2c: at91: don't account as iowait
i2c: remove FSF address
Linus Torvalds [Sat, 8 Nov 2014 16:47:16 +0000 (08:47 -0800)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"Two fixlets for the armada SoC interrupt controller"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip: armada-370-xp: Fix MPIC interrupt handling
irqchip: armada-370-xp: Fix MSI interrupt handling
Linus Torvalds [Sat, 8 Nov 2014 16:45:20 +0000 (08:45 -0800)]
Merge git://git./linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
"For:
- some regression fixes at the Remote Controller core and imon driver
- a build fix for certain randconfigs with ir-hix5hd2
- don't feed power to satellite system at ds3000 driver init
It also contains some fixes for drivers added for Kernel 3.18:
- some fixes at the new ISDB-S driver, and the corresponding bits to
fix some descriptors for this Japanese TV standard at the DVB core
- two warning cleanups for sp2 driver if PM is disabled
- change the default mode for the new vivid driver"
* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] sp2: sp2_init() can be static
[media] dvb:tc90522: fix always-false expression
[media] dvb-core: set default properties of ISDB-S
[media] dvb:tc90522: fix stats report
[media] vivid: default to single planar device instances
[media] imon: fix other RC type protocol support
[media] ir-hix5hd2 fix build warning
[media] ds3000: fix LNB supply voltage on Tevii S480 on initialization
[media] rc5-decoder: BZ#85721: Fix RC5-SZ decoding
[media] rc-core: fix protocol_change regression in ir_raw_event_register
Linus Torvalds [Sat, 8 Nov 2014 02:08:02 +0000 (18:08 -0800)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
"This weeks' round of MIPS bug fixes for 3.18:
- wire up the bpf syscall
- fix TLB dump output for R3000 class TLBs
- fix strnlen_user return value if no NUL character was found.
- fix build with binutils 2.24.51+. While there is no binutils 2.25
release yet, toolchains derived from binutils 2.24.51+ are already
in common use.
- the Octeon GPIO code forgot to offline GPIO IRQs.
- fix build error for XLP.
- fix possible BUG assertion with EVA for CMA"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: Fix build with binutils 2.24.51+
MIPS: R3000: Fix debug output for Virtual page number
MIPS: Fix strnlen_user() return value in case of overlong strings.
MIPS: CMA: Do not reserve memory if not required
MIPS: Wire up bpf syscall.
MIPS/Xlp: Remove the dead function destroy_irq() to fix build error
MIPS: Octeon: Make Octeon GPIO IRQ chip CPU hotplug-aware
Linus Torvalds [Fri, 7 Nov 2014 22:08:13 +0000 (14:08 -0800)]
Merge tag 'xfs-for-linus-3.18-rc3' of git://git./linux/kernel/git/dgc/linux-xfs
Pull xfs fixes from Dave Chinner:
"This update fixes a warning in the new pagecache_isize_extended() and
updates some related comments, another fix for zero-range
misbehaviour, and an unforntuately large set of fixes for regressions
in the bulkstat code.
The bulkstat fixes are large but necessary. I wouldn't normally push
such a rework for a -rcX update, but right now xfsdump can silently
create incomplete dumps on 3.17 and it's possible that even xfsrestore
won't notice that the dumps were incomplete. Hence we need to get
this update into 3.17-stable kernels ASAP.
In more detail, the refactoring work I committed in 3.17 has exposed a
major hole in our QA coverage. With both xfsdump (the major user of
bulkstat) and xfsrestore silently ignoring missing files in the
dump/restore process, incomplete dumps were going unnoticed if they
were being triggered. Many of the dump/restore filesets were so small
that they didn't evenhave a chance of triggering the loop iteration
bugs we introduced in 3.17, so we didn't exercise the code
sufficiently, either.
We have already taken steps to improve QA coverage in xfstests to
avoid this happening again, and I've done a lot of manual verification
of dump/restore on very large data sets (tens of millions of inodes)
of the past week to verify this patch set results in bulkstat behaving
the same way as it does on 3.16.
Unfortunately, the fixes are not exactly simple - in tracking down the
problem historic API warts were discovered (e.g xfsdump has been
working around a 20 year old bug in the bulkstat API for the past 10
years) and so that complicated the process of diagnosing and fixing
the problems. i.e. we had to fix bugs in the code as well as
discover and re-introduce the userspace visible API bugs that we
unwittingly "fixed" in 3.17 that xfsdump relied on to work correctly.
Summary:
- incorrect warnings about i_mutex locking in pagecache_isize_extended()
and updates comments to match expected locking
- another zero-range bug fix for stray file size updates
- a bunch of fixes for regression in the bulkstat code introduced in
3.17"
* tag 'xfs-for-linus-3.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs:
xfs: track bulkstat progress by agino
xfs: bulkstat error handling is broken
xfs: bulkstat main loop logic is a mess
xfs: bulkstat chunk-formatter has issues
xfs: bulkstat chunk formatting cursor is broken
xfs: bulkstat btree walk doesn't terminate
mm: Fix comment before truncate_setsize()
xfs: rework zero range to prevent invalid i_size updates
mm: Remove false WARN_ON from pagecache_isize_extended()
xfs: Check error during inode btree iteration in xfs_bulkstat()
xfs: bulkstat doesn't release AGI buffer on error
Linus Torvalds [Fri, 7 Nov 2014 19:55:47 +0000 (11:55 -0800)]
Merge tag 'regulator-v3.18-rc3' of git://git./linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"More changes than I'd like here, most of them for a single bug
repeated in a bunch of drivers with data not being initialized
correctly, plus a fix to lower the severity of a warning introduced in
the last merge window which can legitimately go off so we don't want
to alarm users excessively"
* tag 'regulator-v3.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: s2mpa01: zero-initialize regulator match table array
regulator: max8660: zero-initialize regulator match table array
regulator: max77802: zero-initialize regulator match table
regulator: max77686: zero-initialize regulator match table
regulator: max1586: zero-initialize regulator match table array
regulator: max77693: Fix use of uninitialized regulator config
regulator: of: Lower the severity of the error with no container
Linus Torvalds [Fri, 7 Nov 2014 19:54:44 +0000 (11:54 -0800)]
Merge tag 'spi-v3.18-rc3' of git://git./linux/kernel/git/broonie/spi
Pull spi bugfixes from Mark Brown:
"A couple of small driver fixes for v3.18, both quite problematic if
you hit a use case that's affected"
* tag 'spi-v3.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: pxa2xx: toggle clocks on suspend if not disabled by runtime PM
spi: fsl-dspi: Fix CTAR selection
Johannes Berg [Thu, 30 Oct 2014 09:00:35 +0000 (10:00 +0100)]
tiny: rename ENABLE_DEV_COREDUMP to ALLOW_DEV_COREDUMP
The ENABLE_DEV_COREDUMP option is misleading as it implies that
it gets the framework enabled, this isn't true it just allows it
to get enabled if a driver needs it.
Rename it to ALLOW_DEV_COREDUMP to better capture its semantics.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Acked-by: Aristeu Rozanski <aris@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Aristeu Rozanski [Thu, 16 Oct 2014 15:49:49 +0000 (11:49 -0400)]
tiny: reverse logic for DISABLE_DEV_COREDUMP
It's desirable for allnconfig and tinyconfig targets to result in the
least amount of code possible. DISABLE_DEV_COREDUMP exists as a way to
switch off DEV_COREDUMP regardless if any drivers select
WANT_DEV_COREDUMP.
This patch renames the option to ENABLE_DEV_COREDUMP and setting it to
'n' (as in allnconfig or tinyconfig) will effectively disable device
coredump.
Cc: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Laurent Pinchart [Thu, 30 Oct 2014 13:59:37 +0000 (15:59 +0200)]
i2c: core: Dispose OF IRQ mapping at client removal time
Clients instantiated from OF get an IRQ mapping created at device
registration time. Dispose the mapping when the client is removed.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org
Wolfram Sang [Mon, 3 Nov 2014 20:16:16 +0000 (21:16 +0100)]
i2c: at91: don't account as iowait
iowait is for blkio [1]. I2C shouldn't use it.
[1] https://lkml.org/lkml/2014/11/3/317
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Cc: stable@kernel.org
Wolfram Sang [Tue, 4 Nov 2014 22:46:27 +0000 (23:46 +0100)]
i2c: remove FSF address
We have a central copy of the GPL for that. Some addresses were already
outdated.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Mark Knibbs [Tue, 4 Nov 2014 13:00:15 +0000 (13:00 +0000)]
USB: Update default usb-storage delay_use value in kernel-parameters.txt
Back in 2010 the default usb-storage delay_use time was reduced from 5 to 1
second (commit
a4a47bc03fe520e95e0c4212bf97c86545fb14f9), but
kernel-parameters.txt wasn't updated to reflect that.
Signed-off-by: Mark Knibbs <markk@clara.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andrew Jackson [Fri, 7 Nov 2014 14:14:23 +0000 (14:14 +0000)]
serial: pl011: Add device tree support for RX DMA polling
Add equivalent attributes to those provided in the platform data
for use when RX DMA is enabled.
Signed-off-by: Andrew Jackson <Andrew.Jackson@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andrew Jackson [Fri, 7 Nov 2014 14:14:47 +0000 (14:14 +0000)]
serial: pl011: Don't enable RX DMA if residue processing not supported
If the DMA engine doesn't support residue processing then the RX DMA
handling won't work terribly well if polling is enabled. So, disable
RX DMA if residue handling isn't available.
Signed-off-by: Andrew Jackson <Andrew.Jackson@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andrew Jackson [Fri, 7 Nov 2014 14:14:43 +0000 (14:14 +0000)]
serial: pl011: Set length of DMA transfer
The DMA engines on some systems require that the dma_length is set
when using scatter gather lists.
Signed-off-by: Andrew Jackson <Andrew.Jackson@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andrew Jackson [Fri, 7 Nov 2014 14:14:39 +0000 (14:14 +0000)]
serial: pl011: Avoid assumptions about buffer size when refilling TX DMA
The existing code assumed that PL011_DMA_BUFFER_SIZE == UART_XMIT_SIZE,
which may not always be the case. This allows for these two being
different sizes and not copying too much data.
Signed-off-by: Andrew Jackson <Andrew.Jackson@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andrew Jackson [Fri, 7 Nov 2014 14:14:35 +0000 (14:14 +0000)]
serial: pl011: Allocate TX DMA buffer from DMA capable memory
Allocating with __GFP_DMA avoids the need for bounce buffers
Signed-off-by: Andrew Jackson <Andrew.Jackson@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fabio Estevam [Fri, 7 Nov 2014 02:23:14 +0000 (00:23 -0200)]
serial: fsl_lpuart: Remove unneeded registration message
There is no real value in displaying "serial: Freescale lpuart driver" in every
boot.
The uart_register_driver() can fail and even so the "serial: Freescale lpuart
driver" will be displayed, which is not really helpful.
This is particularly annoying when booting multi_v7_defconfig kernel on a SoC
that is not a Vybrid/Layerscape and even though this message gets displayed.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Jingchang Lu <jingchang.lu@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fabio Estevam [Fri, 7 Nov 2014 02:23:13 +0000 (00:23 -0200)]
serial: fsl_lpuart: Remove unneeded check for 'res'
'res' will be automatically checked inside devm_ioremap_resource(), so there is
no need to explicitly perform a NULL check.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Jingchang Lu <jingchang.lu@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Yijing Wang [Fri, 7 Nov 2014 04:05:49 +0000 (12:05 +0800)]
sysfs: driver core: Fix glue dir race condition by gdp_mutex
There is a race condition when removing glue directory.
It can be reproduced in following test:
path 1: Add first child device
device_add()
get_device_parent()
/*find parent from glue_dirs.list*/
list_for_each_entry(k, &dev->class->p->glue_dirs.list, entry)
if (k->parent == parent_kobj) {
kobj = kobject_get(k);
break;
}
....
class_dir_create_and_add()
path2: Remove last child device under glue dir
device_del()
cleanup_device_parent()
cleanup_glue_dir()
kobject_put(glue_dir);
If path2 has been called cleanup_glue_dir(), but not
call kobject_put(glue_dir), the glue dir is still
in parent's kset list. Meanwhile, path1 find the glue
dir from the glue_dirs.list. Path2 may release glue dir
before path1 call kobject_get(). So kernel will report
the warning and bug_on.
This is a "classic" problem we have of a kref in a list
that can be found while the last instance could be removed
at the same time.
This patch reuse gdp_mutex to fix this race condition.
The following calltrace is captured in kernel 3.4, but
the latest kernel still has this bug.
-----------------------------------------------------
<4>[ 3965.441471] WARNING: at ...include/linux/kref.h:41 kobject_get+0x33/0x40()
<4>[ 3965.441474] Hardware name: Romley
<4>[ 3965.441475] Modules linked in: isd_iop(O) isd_xda(O)...
...
<4>[ 3965.441605] Call Trace:
<4>[ 3965.441611] [<
ffffffff8103717a>] warn_slowpath_common+0x7a/0xb0
<4>[ 3965.441615] [<
ffffffff810371c5>] warn_slowpath_null+0x15/0x20
<4>[ 3965.441618] [<
ffffffff81215963>] kobject_get+0x33/0x40
<4>[ 3965.441624] [<
ffffffff812d1e45>] get_device_parent.isra.11+0x135/0x1f0
<4>[ 3965.441627] [<
ffffffff812d22d4>] device_add+0xd4/0x6d0
<4>[ 3965.441631] [<
ffffffff812d0dbc>] ? dev_set_name+0x3c/0x40
....
<2>[ 3965.441912] kernel BUG at ..../fs/sysfs/group.c:65!
<4>[ 3965.441915] invalid opcode: 0000 [#1] SMP
...
<4>[ 3965.686743] [<
ffffffff811a677e>] sysfs_create_group+0xe/0x10
<4>[ 3965.686748] [<
ffffffff810cfb04>] blk_trace_init_sysfs+0x14/0x20
<4>[ 3965.686753] [<
ffffffff811fcabb>] blk_register_queue+0x3b/0x120
<4>[ 3965.686756] [<
ffffffff812030bc>] add_disk+0x1cc/0x490
....
-------------------------------------------------------
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Weng Meiling <wengmeiling.weng@huawei.com>
Cc: <stable@vger.kernel.org> #3.4+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Manuel Lauss [Fri, 7 Nov 2014 13:13:54 +0000 (14:13 +0100)]
MIPS: Fix build with binutils 2.24.51+
Starting with version 2.24.51.
20140728 MIPS binutils complain loudly
about mixing soft-float and hard-float object files, leading to this
build failure since GCC is invoked with "-msoft-float" on MIPS:
{standard input}: Warning: .gnu_attribute 4,3 requires `softfloat'
LD arch/mips/alchemy/common/built-in.o
mipsel-softfloat-linux-gnu-ld: Warning: arch/mips/alchemy/common/built-in.o
uses -msoft-float (set by arch/mips/alchemy/common/prom.o),
arch/mips/alchemy/common/sleeper.o uses -mhard-float
To fix this, we detect if GAS is new enough to support "-msoft-float" command
option, and if it does, we can let GCC pass it to GAS; but then we also need
to sprinkle the files which make use of floating point registers with the
necessary ".set hardfloat" directives.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Cc: Matthew Fortune <Matthew.Fortune@imgtec.com>
Cc: Markos Chandras <Markos.Chandras@imgtec.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/8355/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Konrad Zapalowicz [Thu, 6 Nov 2014 23:05:35 +0000 (00:05 +0100)]
drivers: serial: jsm: Remove FSF address from the file documentation/header
This commit removes the address of Free Software Foundation from each
of the mentioned file in order to suppress the checkpatch warning.
Signed-off-by: Konrad Zapalowicz <bergo.torino@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Zapalowicz [Thu, 6 Nov 2014 23:05:33 +0000 (00:05 +0100)]
drivers: serial: jsm: Enable support for Digi Classic adapters
This commit enables support for the Digi Classic adapters line in the
jsm driver. This means changes in:
- device probing code
- device cleanup code
- driver description (Kconfig)
The init/cleanup code is based on the staging/dgnc driver.
Signed-off-by: Konrad Zapalowicz <bergo.torino@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Zapalowicz [Thu, 6 Nov 2014 23:05:32 +0000 (00:05 +0100)]
drivers: serial: jsm: Add the Classic board implementation
This commit adds the Digi Classic board implementation to the
staging/jsm driver.
The code here is taken from the staging/dgnc driver and modified to
match the serial/jsm state. This work is mostly based on the changes
that has been done to the code handling the Digi Neo cards with the
inspiration coming from the diff between staging/dgnc and serial/jsm
as well as the LKML history for the jsm_neo.c
The code compiles now and has no sparse and checkpatch errors or
warnings.
Signed-off-by: Konrad Zapalowicz <bergo.torino@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Frans Klaver [Thu, 6 Nov 2014 20:10:17 +0000 (21:10 +0100)]
serial: 8250_core: actually limit char reads to max_count
In serial8250_rx_chars(), max_count is set to 256. Due to the
post-decrement operator used in the while() condition, the maximum
number of iterations actually 257. This is not a problem, but it is
mildly surprising if you're debugging. Use pre-decrement instead.
Signed-off-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jiri Slaby [Thu, 6 Nov 2014 15:56:33 +0000 (16:56 +0100)]
tty: warn on deprecated serial flags
When somebody calls TIOCSSERIAL ioctl with serial flags to set one of
* ASYNC_SESSION_LOCKOUT
* ASYNC_PGRP_LOCKOUT
* ASYNC_CALLOUT_NOHUP
* ASYNC_AUTOPROBE
nothing happens. We actually ignore the flags for over a decade at
least (I checked 2.6.0).
So start yelling at users who use those flags, that they shouldn't.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Alan Cox <gnomes@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Konrad Zapalowicz [Mon, 3 Nov 2014 18:52:37 +0000 (19:52 +0100)]
drivers: serial: jsm: Add Classic board UART structure
This commit adds the UART structure for the Digi Classic cards. This
code comes from the staging/dgnc driver.
Signed-off-by: Konrad Zapalowicz <bergo.torino@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sudip Mukherjee [Thu, 6 Nov 2014 13:30:42 +0000 (19:00 +0530)]
serial: MIPS: lantiq: use devm_iounmap instead of iounmap
port->membase was allocated using devm_ioremap_nocache, so ideally
we should unmap it using devm_iounmap. but it was using iounmap.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andy Shevchenko [Thu, 6 Nov 2014 11:28:17 +0000 (13:28 +0200)]
serial: 8250_dma: no need to set tx_err twice
In the serial8250_tx_dma() the tx_err flag is set in case of error. Thus, there
is no need to repeat this in __dma_tx_complete().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andy Shevchenko [Thu, 6 Nov 2014 11:28:16 +0000 (13:28 +0200)]
serial: 8250_dma: call serial8250_tx_dma unconditionally
Since we have the same check inside the function we may drop it away in
__dma_tx_complete().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ricardo Ribalda Delgado [Thu, 6 Nov 2014 08:23:00 +0000 (09:23 +0100)]
tty/serial_core: Introduce lock mechanism for RS485
Introduce an homogeneous lock system between setting and using the rs485
data of the uart_port.
This patch should not be split into multiple ones in order to avoid
leaving the tree in an unstable state.
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Reviewed-by: Alan Cox <alan@linux.intel.com>
Suggested-by: Alan Cox <alan@linux.intel.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ricardo Ribalda Delgado [Thu, 6 Nov 2014 08:22:59 +0000 (09:22 +0100)]
serial_core: Remove call to driver-specific TIO[GS]RS485]
Once there is no more handlers for TIOC[GS]RS485 there is no need to
call the driver specific ioctl when the generic implementation is
missing.
Reviewed-by: Alan Cox <alan@linux.intel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ricardo Ribalda Delgado [Thu, 6 Nov 2014 08:22:58 +0000 (09:22 +0100)]
drivers/max310: Use the rs485 functions on serial_core
In order to unify all the rs485 ioctl handling
Use the implementation of TIOC[GS]RS485 ioctl handling on serial_core.
Reviewed-by: Alan Cox <alan@linux.intel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ricardo Ribalda Delgado [Thu, 6 Nov 2014 21:46:14 +0000 (22:46 +0100)]
serial/omap: Use the rs485 functions on serial_core
In order to unify all the rs485 ioctl handling
Use the implementation of TIOC[GS]RS485 ioctl handling on serial_core.
Reviewed-by: Alan Cox <alan@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ricardo Ribalda Delgado [Thu, 6 Nov 2014 08:22:56 +0000 (09:22 +0100)]
serial/atmel: Use the rs485 functions on serial_core
In order to unify all the rs485 ioctl handling.
Use the implementation of TIOC[GS]RS485 ioctl handling on serial_core.
Reviewed-by: Alan Cox <alan@linux.intel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ricardo Ribalda Delgado [Thu, 6 Nov 2014 08:22:55 +0000 (09:22 +0100)]
serial/mcf: Use the rs485 functions on serial_core
In order to unify all the rs485 ioctl handling.
Use the implementation of TIOC[GS]RS485 ioctl handling on serial_core.
Reviewed-by: Alan Cox <alan@linux.intel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ricardo Ribalda Delgado [Thu, 6 Nov 2014 08:22:54 +0000 (09:22 +0100)]
serial/sc16is7xx: Use the rs485 functions on serial_core
In order to unify all the rs485 ioctl handling.
Use the implementation of TIOC[GS]RS485 ioctl handling on serial_core.
Reviewed-by: Alan Cox <alan@linux.intel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ricardo Ribalda Delgado [Thu, 6 Nov 2014 08:22:53 +0000 (09:22 +0100)]
serial/8250: Remove obsolete handling of rs485 ioctls
There is no more users for this functions. All the 8250 drivers are
using the rs485 handler on serial_core instead.
Reviewed-by: Alan Cox <alan@linux.intel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ricardo Ribalda Delgado [Thu, 6 Nov 2014 08:22:52 +0000 (09:22 +0100)]
8250/fintek: Use rs485 handler from serial_core
In order to remove the handler for rs485 ioctls on serial_8250, all the
drivers must use the implementation on serial_core.
Reviewed-by: Alan Cox <alan@linux.intel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ricardo Ribalda Delgado [Thu, 6 Nov 2014 08:22:51 +0000 (09:22 +0100)]
serial/8250: Copy RS485 fields to serial_core
Initialize recently added rs485 fields on serial_core
Reviewed-by: Alan Cox <alan@linux.intel.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Peter Hurley <peter@hurleysoftware.com>
Cc: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ricardo Ribalda Delgado [Thu, 6 Nov 2014 21:46:13 +0000 (22:46 +0100)]
serial_core: Handle TIOC[GS]RS485 ioctls.
The following drivers: 8250_core, atmel_serial, max310x, mcf, omap-serial
and sci16is7xx implement code to handle RS485 ioctls.
In order to avoid code duplication, we implement a simple ioctl handler
on the serial_core layer.
This handler can be used by all the other drivers instead of duplicating
code.
Until this is the only RS485 ioctl handler, it will try first the
rs485_config callback and if it is not present it will call the driver
specific ioctl.
Reviewed-by: Alan Cox <alan@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sudip Mukherjee [Thu, 16 Oct 2014 08:46:22 +0000 (14:16 +0530)]
serial: 8250: sparse warning of incorrect type
fixed a sparse warning in 8250_core.c :
incorrect type in assignment (different address spaces)
the warning was because an unsigned char pointer was being assigned to
a pointer of unsigned char __iomem type .
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sergej Pupykin [Thu, 6 Nov 2014 11:36:31 +0000 (14:36 +0300)]
parport: Add support for the WCH382 2S/1P multi-IO card
WCH382 is a PCI-E card with 1 LPT and 2 DB9 COM ports detected as
Serial controller: Device 1c00:3250 (rev 10) (prog-if 05 [16850])
Signed-off-by: Sergej Pupykin <ml@sergej.pp.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Hurley [Wed, 5 Nov 2014 18:11:45 +0000 (13:11 -0500)]
serial: Test/disable MSIs if switching from N_PPS
Switching to the N_PPS line discipline may require enabling
modem status interrupts; conversely switching from N_PPS may
require disabling modem status interrupts.
Affected drivers:
8250
amba-pl010
atmel
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Hurley [Wed, 5 Nov 2014 18:11:44 +0000 (13:11 -0500)]
serial: Take uart port lock for direct *_enable_ms()
Three UART drivers (8250, atmel & amba-pl010) directly call their
enable_ms() method; the uart port lock must be acquired before
any h/w programming.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Hurley [Wed, 5 Nov 2014 18:11:43 +0000 (13:11 -0500)]
serial: core: Pass termios to set_ldisc() notifications
UART drivers which enable modem status interrupts when switching
to N_PPS line discipline need to determine if modem status
interrupts should be disabled when switching from N_PPS.
Specifically, the set_ldisc() notification needs to evaluate
UART_ENABLE_MS() which requires termios->c_cflag.
Convert in-tree UART drivers to new interface.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Hurley [Wed, 5 Nov 2014 18:11:42 +0000 (13:11 -0500)]
serial: core: Claim port mutex for set_ldisc()
Three UART drivers (8250, atmel & amba-pl010) enable modem status
interrupts if the line discipline is changed to N_PPS. However,
the uart port flags may only be safely modified while holding the
port mutex.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Hurley [Wed, 5 Nov 2014 18:11:41 +0000 (13:11 -0500)]
tty: Allow safe access to termios for set_ldisc() handlers
Allow a tty driver to safely access termios settings while handling
the set_ldisc() notification. UART drivers use the set_ldisc()
notification to check if the N_PPS line discipline is being enabled;
if so, modem status interrupts may also need to be enabled. Conversely,
modem status interrupts may need to be disabled if switching away
from the N_PPS line discipline.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Hurley [Wed, 5 Nov 2014 17:40:05 +0000 (12:40 -0500)]
tty: Flush tty buffers after hardware shutdown
The line discipline buffer and the tty buffers must be flushed again
after hardware shutdown; otherwise, a brief window exists between the
ldisc flush in tty_port_close_start() and the subsequent
tty_port_shutdown(), during which more data could be received into the
tty buffers. A racing open might then be able to receive data from the
previous session.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Hurley [Wed, 5 Nov 2014 17:40:04 +0000 (12:40 -0500)]
tty: Convert tty->closing to int
tty->closing is a bitfield member; prevent corruption from non-atomic
update by assigning a unique memory location.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Hurley [Wed, 5 Nov 2014 17:40:03 +0000 (12:40 -0500)]
tty: Move tty hung up check from port->lock critical section
The port->lock does not protect the filp->f_op field; move
the tty_hung_up_p() test outside the port->lock critical section
in tty_port_close_start().
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Lars-Peter Clausen [Wed, 5 Nov 2014 12:35:16 +0000 (13:35 +0100)]
tty: xuartps: Add support for setting modem control signals
Add support for setting the state of the DTR and RTS signals.
Acked-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Julien CHAUVEAU [Tue, 4 Nov 2014 10:45:55 +0000 (11:45 +0100)]
serial: 8250_dw: get index of serial line from DT aliases
Get index of serial line from device tree using function of_alias_get_id().
If no alias is found, the 8250 core takes care of incrementing the line number.
Signed-off-by: Julien CHAUVEAU <julien.chauveau@neo-technologies.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Lucas Stach [Mon, 3 Nov 2014 22:16:54 +0000 (23:16 +0100)]
serial: of-serial: fetch line number from DT
The general agreed way to specify a fixed line number
for a serial console is to provide a "serial" alias
in the devicetree. Start parsing this property in
of_serial.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Aaron Sierra [Fri, 31 Oct 2014 00:49:52 +0000 (19:49 -0500)]
serial: 8250_pci: Check mapping in pci_ni8430_init
Check the return value of ioremap_nocache to make sure we got a
valid mapping.
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Aaron Sierra [Fri, 31 Oct 2014 00:49:45 +0000 (19:49 -0500)]
serial: 8250_pci: Handle devices mapped above 4 GiB
Several init/setup functions passed the PCI BAR resource start address
to ioremap_nocache() via an unsigned long. This caused address truncation
for a 32-bit device mapped above 4 GiB (i.e. the CPU interacts with the
device via a translated address), which resulted in a kernel panic.
This patch replaces all of the instances of intermediate variable use
with pci_ioremap_bar() to ensure the full resource_size_t start address
is used and that ioremap_nocache() is still called.
The kernel panic (Exar XR17V358 PCIe device on a Freescale P2020 SBC):
Machine check in kernel mode.
Caused by (from MCSR=10008): Bus - Read Data Bus Error
Oops: Machine check, sig: 7 [#1]
SMP NR_CPUS=2 X-ES P2020
Modules linked in:
CPU: 1 PID: 1 Comm: swapper/0 Not tainted 3.14.15-xes_r2
-00002-g560e401 #978
task:
bf850000 ti:
bffee000 task.ti:
bf84c000
NIP:
80318e10 LR:
80319ecc CTR:
80318dfc
REGS:
bffeff10 TRAP: 0204 Not tainted (3.14.15-xes_r2
-00002-g560e401)
MSR:
00021000 <CE,ME> CR:
20adbe42 XER:
00000000
DEAR:
c1058001 ESR:
00000000
GPR00:
00000000 bf84db30 bf850000 80cb4af8 00000001 00000000 80000007 80000000
GPR08:
bf837c9c c1058001 00000001 00000000 80000007 00000000 80002a10 00000000
GPR16:
00000000 00000000 00000000 00000000 00000000 00000000 80cb0000 80c72dc4
GPR24:
80cb4900 fffffffe 00029000 00000001 bf8c11e8 ffffffea 80c72ce4 80cb4af8
NIP [
80318e10] mem_serial_in+0x14/0x28
LR [
80319ecc] serial8250_config_port+0x160/0xe38
Call Trace:
[
bf84db30] [
80319d94] serial8250_config_port+0x28/0xe38 (unreliable)
[
bf84db60] [
80315e3c] uart_add_one_port+0x148/0x3a4
[
bf84dbf0] [
8031bf40] serial8250_register_8250_port+0x2dc/0x3c8
[
bf84dc20] [
8032111c] pciserial_init_ports+0xd4/0x1c0
[
bf84dd50] [
803212f8] pciserial_init_one+0xf0/0x224
[
bf84dd90] [
802d8ff4] local_pci_probe+0x34/0x8c
[
bf84dda0] [
802d92c8] pci_device_probe+0x84/0xa0
[
bf84ddc0] [
80329ee0] driver_probe_device+0xac/0x26c
[
bf84dde0] [
8032a15c] __driver_attach+0xbc/0xc0
[
bf84de00] [
80328388] bus_for_each_dev+0x90/0xcc
[
bf84de30] [
80329cd0] driver_attach+0x24/0x34
[
bf84de40] [
80328e28] bus_add_driver+0x104/0x1fc
[
bf84de60] [
8032a8c8] driver_register+0x70/0x138
[
bf84de70] [
802d93c0] __pci_register_driver+0x48/0x58
[
bf84de80] [
8077e0e4] serial_pci_driver_init+0x24/0x34
[
bf84de90] [
80002228] do_one_initcall+0x34/0x1b0
[
bf84df00] [
80764294] kernel_init_freeable+0x138/0x1e8
[
bf84df30] [
80002a24] kernel_init+0x14/0x108
[
bf84df40] [
8000ef94] ret_from_kernel_thread+0x5c/0x64
Instruction dump:
800800c4 7d290214 39290001 7c0004ac 7ca049ae 7c0004ac 4e800020 88030035
81230008 7c840030 7d292214 7c0004ac <
88690000>
0c030000 4c00012c 5463063e
---[ end trace
e3c16443b5d573c6 ]---
Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jingchang Lu [Fri, 24 Oct 2014 09:20:49 +0000 (17:20 +0800)]
serial: fsl-lpuart: add lpuart32 power management support
This adds 32-bit register lpuart32 power management support,
this also updates the 8-bit register lpuart resume function.
Signed-off-by: Jingchang Lu <jingchang.lu@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>