fixed the coccicheck:
drivers/spi/spi-dw-bt1.c:220:27-30: ERROR: Missing
resource_size with mem.
Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Acked-by: Serge Semin <fancer.lancer@gmail.com>
Link: https://lore.kernel.org/r/1606114975-31362-1-git-send-email-tiantao6@hisilicon.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Shutdown bus function might be called on the unbound device, so add a
check if there is a driver before calling its shutdown function.
This fixes following kernel panic obserbed during system reboot:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000018
...
Call trace:
spi_shutdown+0x10/0x38
kernel_restart_prepare+0x34/0x40
kernel_restart+0x14/0x88
__do_sys_reboot+0x148/0x248
__arm64_sys_reboot+0x1c/0x28
el0_svc_common.constprop.3+0x74/0x198
do_el0_svc+0x20/0x98
el0_sync_handler+0x140/0x1a8
el0_sync+0x140/0x180
Code: f9403402 d1008041 f100005f 9a9f1021 (f9400c21)
---[ end trace 266c07205a2d632e ]---
Fixes: 9db34ee64c (spi: Use bus_type functions for probe, remove and shutdown)
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20201124131523.32287-1-m.szyprowski@samsung.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The driver core ignores the return value of struct device_driver::remove
(because in general there is nothing that can be done about that). So
add a warning when an spi driver returns an error.
This simplifies the quest to make struct device_driver::remove return void.
A consequent change would be to make struct spi_driver::remove return void,
but I'm keeping this quest for later (or someone else).
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20201119161604.2633521-3-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
The eventual goal is to get rid of the callbacks in struct
device_driver. Other than not using driver callbacks there should be no
side effect of this patch.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20201119161604.2633521-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Consider an spi driver with a .probe but without a .remove callback (e.g.
rtc-ds1347). The function spi_drv_probe() is called to bind a device and
so dev_pm_domain_attach() is called. As there is no remove callback
spi_drv_remove() isn't called at unbind time however and so calling
dev_pm_domain_detach() is missed and the pm domain keeps active.
To fix this always use both spi_drv_probe() and spi_drv_remove() and
make them handle the respective callback not being set. This has the
side effect that for a (hypothetical) driver that has neither .probe nor
remove the clk and pm domain setup is done.
Fixes: 33cf00e570 ("spi: attach/detach SPI device to the ACPI power domain")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20201119161604.2633521-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in mxs_spi_probe, so we should fix it.
Fixes: b7969caf41 ("spi: mxs: implement runtime pm")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201106012421.95420-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Since 5.10-rc1 i.MX is a devicetree-only platform and the existing
.id_table support in this driver was only useful for old non-devicetree
platforms.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20201116202606.29888-1-festevam@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
MT8192 spi-nor is an independent sub system, we need extra control axi
bus clock for it. Add support for the additional axi clock to allow it
to be configured appropriately.
Signed-off-by: bayi cheng <bayi.cheng@mediatek.com>
Tested-by: Ikjoon Jang <ikjn@chromium.org>
Link: https://lore.kernel.org/r/1605084902-13151-2-git-send-email-bayi.cheng@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Do not overwrite spi->mode flags set by spi framework, otherwise the
chip select polarity will get lost.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Link: https://lore.kernel.org/r/20201027095724.18654-3-o.rempel@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
If the calls to devm_platform_ioremap_resource(), irq_of_parse_and_map()
or devm_request_irq() fail on probe of the ST SSC4 SPI driver, the
runtime PM disable depth is incremented even though it was not
decremented before. Fix it.
Fixes: cd050abeba ("spi: st-ssc4: add missed pm_runtime_disable")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: <stable@vger.kernel.org> # v5.5+
Cc: Chuhong Yuan <hslester96@gmail.com>
Link: https://lore.kernel.org/r/fbe8768c30dc829e2d77eabe7be062ca22f84024.1604874488.git.lukas@wunner.de
Signed-off-by: Mark Brown <broonie@kernel.org>
If the calls to devm_request_irq() or devm_spi_register_master() fail
on probe of the PIC32 SPI driver, the DMA channels requested by
pic32_spi_dma_prep() are erroneously not released. Plug the leak.
Fixes: 1bcb9f8ceb ("spi: spi-pic32: Add PIC32 SPI master driver")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: <stable@vger.kernel.org> # v4.7+
Cc: Purna Chandra Mandal <purna.mandal@microchip.com>
Link: https://lore.kernel.org/r/9624250e3a7aa61274b38219a62375bac1def637.1604874488.git.lukas@wunner.de
Signed-off-by: Mark Brown <broonie@kernel.org>
If the calls to platform_get_irq() or devm_request_irq() fail on probe
of the SynQuacer SPI driver, the clock "sspi->clk" is erroneously not
unprepared and disabled.
If the clock rate "master->max_speed_hz" cannot be determined, the same
happens and in addition the spi_master struct is not freed.
Fix it.
Fixes: b0823ee35c ("spi: Add spi driver for Socionext SynQuacer platform")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: <stable@vger.kernel.org> # v5.3+
Cc: Masahisa Kojima <masahisa.kojima@linaro.org>
Link: https://lore.kernel.org/r/232281df1ab91d8f0f553a62d5f97fc264ace4da.1604874488.git.lukas@wunner.de
Signed-off-by: Mark Brown <broonie@kernel.org>
pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in sprd_spi_remove, so we should fix it.
Fixes: e7d973a31c ("spi: sprd: Add SPI driver for Spreadtrum SC9860")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Acked-by: Chunyan Zhang <zhang.lyra@gmail.com>
Link: https://lore.kernel.org/r/20201106015035.139574-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Provide a macro to filter all SPI_MODE_0,1,2,3 mode in one run.
The latest SPI framework will parse the devicetree in following call
sequence: of_register_spi_device() -> of_spi_parse_dt()
So, driver do not need to pars the devicetree and will get prepared
flags in the probe.
On one hand it is good far most drivers. On other hand some drivers need to
filter flags provide by SPI framework and apply know to work flags. This drivers
may use SPI_MODE_X_MASK to filter MODE flags and set own, known flags:
spi->flags &= ~SPI_MODE_X_MASK;
spi->flags |= SPI_MODE_0;
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Link: https://lore.kernel.org/r/20201027095724.18654-2-o.rempel@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in callers(spi_imx_prepare_message and
spi_imx_remove), so we should fix it.
Fixes: 525c9e5a32 ("spi: imx: enable runtime pm support")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201102145835.4765-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
If the call to of_device_get_match_data() fails on probe of the Atmel
QuadSPI driver, the clock "aq->pclk" is erroneously not unprepared and
disabled. Fix it.
Fixes: 2e5c888873 ("spi: atmel-quadspi: add support for sam9x60 qspi controller")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: <stable@vger.kernel.org> # v5.1+
Cc: Tudor Ambarus <tudor.ambarus@microchip.com>
Cc: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/8f8dc2815aa97b2378528f08f923bf81e19611f0.1604874488.git.lukas@wunner.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Fix the missing clk_disable_unprepare() before return
from bcm63xx_hsspi_resume in the error handling case when
fails to prepare and enable bs->pll_clk.
Fixes: 0fd85869c2 ("spi/bcm63xx-hsspi: keep pll clk enabled")
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Link: https://lore.kernel.org/r/20201103074911.195530-1-miaoqinglang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in two callers(tegra_spi_setup and
tegra_spi_resume), so we should fix it.
Fixes: f333a331ad ("spi/tegra114: add spi driver")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201103141306.5607-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in tegra_sflash_resume, so we should fix it.
Fixes: 8528547bcc ("spi: tegra: add spi driver for sflash controller")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201103141323.5841-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in two callers(tegra_slink_setup and
tegra_slink_resume), so we should fix it.
Fixes: dc4dc36056 ("spi: tegra: add spi driver for SLINK controller")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201103141345.6188-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Fix the missing clk_disable_unprepare() before return
from mt7621_spi_probe in the error handling case.
Fixes: cbd66c626e ("spi: mt7621: Move SPI driver out of staging")
Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com>
Link: https://lore.kernel.org/r/20201103074912.195576-1-miaoqinglang@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in ti_qspi_setup, so we should fix it.
Fixes: 505a14954e ("spi/qspi: Add qspi flash controller")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201103140947.3815-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in two callers(stm32_qspi_exec_op and
stm32_qspi_setup), so we should fix it.
Fixes: 9d282c17b0 ("spi: stm32-qspi: Add pm_runtime support")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
Link: https://lore.kernel.org/r/20201106015357.141235-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in stm32_spi_resume, so we should fix it.
Fixes: db96bf976a ("spi: stm32: fixes suspend/resume management")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Reviewed-by: Alain Volmat <alain.volmat@st.com>
Link: https://lore.kernel.org/r/20201106015217.140476-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in spi_mem_access_start, so we should fix it.
Fixes: f86c24f479 ("spi: spi-mem: Split spi_mem_exec_op() code")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201103140910.3482-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Fix smatch warning:
drivers/spi/spi-mem.c:746 spi_mem_probe() warn: passing zero to 'PTR_ERR'
Fixes: 5d27a9c8ea ("spi: spi-mem: Extend the SPI mem interface to set a custom memory name")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20201031033042.42892-1-yuehaibing@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in img_spfi_resume, so we should fix it.
Fixes: deba25800a ("spi: Add driver for IMG SPFI controller")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201102145651.3875-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
The IP's DMA capabilities are described in the SoC dtsi, to spare
users duplicating the DMA bindings in their board device tree. Users
that don't want to use DMA, have to overwrite the DMA bindings in
their board device tree. An example is:
commit ddcdaeb882 ("ARM: dts: at91: sama5d2: Add DMA bindings for the SPI and UART flx4 functions")
When the DMA bindings are overwritten, one could see on the console:
atmel_spi fc018400.spi: error -ENODEV: No TX DMA channel, DMA is disabled
atmel_spi fc018400.spi: Atmel SPI Controller using PIO only
Choosing to not use DMA is not a reason to print an error message.
More, the user is already informed when PIO is used: "Atmel SPI Controller
using PIO only". Downgrade to dev_dbg when dma_request_chan() fails.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201030121116.869105-1-tudor.ambarus@microchip.com
Signed-off-by: Mark Brown <broonie@kernel.org>
If SPI is used for periodic polling any sensor, significant delays
sometimes appear. Switching on module clocks during resume lead to delays.
Enabling autosuspend mode causes the controller to not suspend between
SPI transfers and the delays disappear.
The commit also remove unnecessary call to pm_runtime_idle() used
to explicit put device to suspended state. Without pm_runtime_idle() PM
core will put device in the suspended state just after probe() returns.
Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20201019150343.2520-1-akochetkov@lintech.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
If SPI is used for periodic polling any sensor, significant delays
sometimes appear. Switching on module clocks during resume lead to delays.
Enabling autosuspend mode causes the controller to not suspend between
SPI transfers and the delays disappear.
Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
Link: https://lore.kernel.org/r/20201016085014.31667-1-al.kochet@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
DMA-based transfer will be enabled if data length is larger than FIFO size
(64 bytes for A64). This greatly reduce number of interrupts for
transferring data.
For smaller data size PIO mode will be used. In PIO mode whole buffer will
be loaded into FIFO.
If driver failed to request DMA channels then it fallback for PIO mode.
Tested on SOPINE (https://www.pine64.org/sopine/)
Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://lore.kernel.org/r/20201022075221.23332-1-akochetkov@lintech.ru
Signed-off-by: Mark Brown <broonie@kernel.org>
Use a more generic form for __section that requires quotes to avoid
complications with clang and gcc differences.
Remove the quote operator # from compiler_attributes.h __section macro.
Convert all unquoted __section(foo) uses to quoted __section("foo").
Also convert __attribute__((section("foo"))) uses to __section("foo")
even if the __attribute__ has multiple list entry forms.
Conversion done using the script at:
https://lore.kernel.org/lkml/75393e5ddc272dc7403de74d645e6c6e0f4e70eb.camel@perches.com/2-convert_section.pl
Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@gooogle.com>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
tid_addr is not a "pointer to (pointer to int in userspace)"; it is in
fact a "pointer to (pointer to int in userspace) in userspace". So
sparse rightfully complains about passing a kernel pointer to
put_user().
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 453431a549 ("mm, treewide: rename kzfree() to
kfree_sensitive()") renamed kzfree() to kfree_sensitive(),
but it left a compatibility definition of kzfree() to avoid
being too disruptive.
Since then a few more instances of kzfree() have slipped in.
Just get rid of them and remove the compatibility definition
once and for all.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If set, use the environment variable GIT_DIR to change the default .git
location of the kernel git tree.
If GIT_DIR is unset, keep using the current ".git" default.
Link: https://lkml.kernel.org/r/c5e23b45562373d632fccb8bc04e563abba4dd1d.camel@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
which are based on CLOCK_MONOTONIC require time namespace corrected. This
was missed in the original time namesapce support.
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Merge tag 'timers-urgent-2020-10-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"A time namespace fix and a matching selftest. The futex absolute
timeouts which are based on CLOCK_MONOTONIC require time namespace
corrected. This was missed in the original time namesapce support"
* tag 'timers-urgent-2020-10-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
selftests/timens: Add a test for futex()
futex: Adjust absolute futex timeouts with per time namespace offset
- A trivial build fix for sched_feat() to compile correctly with
CONFIG_JUMP_LABEL=n
- Replace a zero lenght array with a flexible array.
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Merge tag 'sched-urgent-2020-10-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Thomas Gleixner:
"Two scheduler fixes:
- A trivial build fix for sched_feat() to compile correctly with
CONFIG_JUMP_LABEL=n
- Replace a zero lenght array with a flexible array"
* tag 'sched-urgent-2020-10-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/features: Fix !CONFIG_JUMP_LABEL case
sched: Replace zero-length array with flexible-array
source bitmask of perf events correctly.
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Merge tag 'perf-urgent-2020-10-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fix from Thomas Gleixner:
"A single fix to compute the field offset of the SNOOPX bit in the data
source bitmask of perf events correctly"
* tag 'perf-urgent-2020-10-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: correct SNOOPX field offset
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Merge tag 'ntb-5.10' of git://github.com/jonmason/ntb
Pull NTB fixes from Jon Mason.
* tag 'ntb-5.10' of git://github.com/jonmason/ntb:
NTB: Use struct_size() helper in devm_kzalloc()
ntb: intel: Fix memleak in intel_ntb_pci_probe
NTB: hw: amd: fix an issue about leak system resources
Pull i2c fix from Wolfram Sang:
"Regression fix for rc1 and stable kernels as well"
* 'i2c/for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: core: Restore acpi_walk_dep_device_list() getting called after registering the ACPI i2c devs
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Merge tag '5.10-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6
Pull more cifs updates from Steve French:
"Add support for stat of various special file types (WSL reparse points
for char, block, fifo)"
* tag '5.10-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
cifs: update internal module version number
smb3: add some missing definitions from MS-FSCC
smb3: remove two unused variables
smb3: add support for stat of WSL reparse points for special file types
Pull more parisc updates from Helge Deller:
- During this merge window O_NONBLOCK was changed to become 000200000,
but we missed that the syscalls timerfd_create(), signalfd4(),
eventfd2(), pipe2(), inotify_init1() and userfaultfd() do a strict
bit-wise check of the flags parameter.
To provide backward compatibility with existing userspace we
introduce parisc specific wrappers for those syscalls which filter
out the old O_NONBLOCK value and replaces it with the new one.
- Prevent HIL bus driver to get stuck when keyboard or mouse isn't
attached
- Improve error return codes when setting rtc time
- Minor documentation fix in pata_ns87415.c
* 'parisc-5.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
ata: pata_ns87415.c: Document support on parisc with superio chip
parisc: Add wrapper syscalls to fix O_NONBLOCK flag usage
hil/parisc: Disable HIL driver when it gets stuck
parisc: Improve error return codes when setting rtc time
