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Fix 'line over 80 characters' issue found by checkpatch.pl script in
handle_scan_done().
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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handle_rcvd_gnrl_async_info()
Fix 'Avoid camelCase' issue found by checkpatch.pl script.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix 'Avoid camelCase' issue found by checkpatch.pl script.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Rename variables with datatype 'u8' in their name to follow the linux
coding style.
Renamed following variables:
u8abort_running_scan
pu8Buffer
pu8keybuf
pu8msa
u8remain_on_chan_flag
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Refactor handle_disconnect() to avoid line over 80 characters issue
reported by checkpatch.pl script.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix 'line over 80 characters' issue reported by checkpatch.pl script.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix 'line over 80 character' issue reported by checkpatch.pl script in
handle_scan().
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Cleanup patch to avoid use of uppercase for label names, to follow linux
coding style.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix 'Avoid camelCase' issue found by checkpatch.pl script.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix 'Avoid camelCase' issue found by checkpatch.pl script.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Refactor cfg_scan_result() API to avoid 'line over 80 chars' issue
reported by checkpatch.pl script.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix 'Avoid camelCase' issue found by checkpatch.pl script.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix 'line over 80 char' issue found in checkpatch.pl script.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix 'line over 80 characters' issue found by checkpatch.pl script. Moved
the common code from wilc_wfi_cfg_parse_tx_action() &
wilc_wfi_cfg_parse_rx_action() to new function to avoid checkpatch issue.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix 'line over 80 characters' issue found by checkpatch.pl script.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix 'line over 80 char' issue found by checkpatch.pl script.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix 'Avoid camelCase' issue found by checkpatch.pl script.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix 'Avoid camelCase' issue found by checkpatch.pl script.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix 'Avoid camleCase' issue found by checkpatch.pl script.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix 'Avoid camelCase' issue found by checkpatch.pl script.
Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This extends spk_io_ops with a synth_out_unicode which takes a u16 character
instead of just a byte, and extends spk_ttyio to implement it to emit
utf-8. spk_do_catch_up_unicode can then be introduced to benefit from
synth_out_unicode, and speakup_dummy made to use spk_do_catch_up_unicode instead
of spk_do_catch_up.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Variable 'val' is initialized with a value that is never read, it is
updated with a new value again after intitialization. Remove the
redundant initialization and move the declaration and assignment into
the scope of the for-loop.
Cleans up clang warning:
drivers/staging/comedi/drivers/adl_pci6208.c:61:15: warning: Value
stored to 'val' during its initialization is never read
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch replaces custom ROR32 and ROL32 macros for the ones included in
bitops header of the linux kernel.
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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One of Neil's recent cleanups apparently has led the code to get
to a state where gcc tracks the 'seqnr' variable just enough to
see that it is sometimes initialized in seq_client_alloc_seq(),
but not enough that it can prove this initialization to be reliable
before the use of that variable:
drivers/staging/lustre/lustre/fid/fid_request.c: In function 'seq_client_alloc_fid':
drivers/staging/lustre/lustre/fid/fid_request.c:245:22: error: 'seqnr' may be used uninitialized in this function [-Werror=maybe-uninitialized]
The code seems to be otherwise correct, and I could not come
up with a good way to simplify it further, so this adds a fake
initialization to shut up that warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We now allow lustre to be built when CONFIG_MODULES is disabled,
but that causes a build failure:
In file included from drivers/staging/lustre/include/linux/libcfs/libcfs.h:42,
from drivers/staging/lustre/lustre/obdclass/lu_object.c:44:
drivers/staging/lustre/lustre/obdclass/lu_object.c: In function 'lu_context_key_degister':
drivers/staging/lustre/lustre/obdclass/lu_object.c:1410:51: error: dereferencing pointer to incomplete type 'struct module'
This particular case can be avoided by using the module_name()
macro that was designed exactly to handle printing the name of
a module in all configurations.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: NeilBrown <neilb@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When we first scan the SMBIOS table, save the size of the DIMM.
Provide a function for other code (EDAC driver) to look up the size
of a DIMM from its SMBIOS handle.
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Cc: Aristeu Rozanski <aris@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: linux-acpi@vger.kernel.org
Cc: linux-nvdimm@lists.01.org
Link: http://lkml.kernel.org/r/20180312182430.10335-5-tony.luck@intel.com
Signed-off-by: Borislav Petkov <bp@suse.de>
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EDAC driver needs to look up attributes of NVDIMMs provided in SMBIOS.
Provide a function that looks up an acpi_nfit_memory_map from a device
handle (node/socket/mc/channel/dimm) and returns the SMBIOS handle.
Also pass back the "flags" so we can see if the NVDIMM is OK.
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Aristeu Rozanski <aris@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Erik Schmauss <erik.schmauss@intel.com>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Cc: Robert Moore <robert.moore@intel.com>
Cc: devel@acpica.org
Cc: linux-acpi@vger.kernel.org
Cc: linux-nvdimm@lists.01.org
Link: http://lkml.kernel.org/r/20180312182430.10335-4-tony.luck@intel.com
Signed-off-by: Borislav Petkov <bp@suse.de>
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Internally Mali DP uses an RGB pipeline so video layers that support
YUV input buffers need to convert the input data to RGB. The YUV
buffers can have various encodings and this patch introduces support
for BT.601, BT.709 and BT.2020 encodings, both limited and full ranges.
This patch adds support for specifying the color encoding of the
input buffers for the planes that are backed by the video layers
and programs the YUV2RGB coefficients into hardware based on the
selected encoding.
Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
[updated to use standard properties]
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
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When unbinding the mali-dp driver the drm_vblank_cleanup() function
warns us that the vblanks are still enabled. Fix that by calling
drm_crtc_vblank_off() in the malidp_unbind() function.
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
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The plane cleanup handler currently calls drm_plane_helper_disable(),
which is a legacy helper function. Replace it with a call to
drm_atomic_helper_shutdown() at removal time.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
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The top-level error handler calls drm_mode_config_cleanup() which will
destroy all planes. There's no need to destroy them manually in lower
error handlers.
As plane cleanup is now handled entirely by drm_mode_config_cleanup(),
we must ensure that the plane .destroy() handler frees allocated memory
for the plane object that was freed by malidp_de_planes_destroy(). Do so
by replacing the call to devm_kfree() in the .destroy() handler by
kfree(). devm_kfree() is currently a no-op as the plane memory is
allocated with kzalloc(), not devm_kzalloc().
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
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Mali DP hardware has a 'go' bit (config_valid) for making the new scene
parameters active at the next page flip. The problem with the current
code is that the driver first sets this bit and then proceeds to wait
for confirmation from the hardware that the configuration has been
updated before arming the vblank event. As config_valid is actually
asserted by the hardware after the vblank event, during the prefetch
phase, when we get to arming the vblank event we are going to send it
at the next vblank, in effect halving the vblank rate from the userspace
perspective.
Fix it by sending the userspace event from the IRQ handler, when we
handle the config_valid interrupt, which syncs with the time when the
hardware is active with the new parameters.
Reported-by: Alexandru-Cosmin Gheorghe <alexandru-cosmin.gheorghe@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
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Mali dp needs to disable pixel alpha blending (use layer alpha blending) to
display color formats that do not contain alpha bits per pixel
This patch depends on:
"[PATCH v2 01/19] drm/fourcc: Add a alpha field to drm_format_info"
Signed-off-by: Ayan Kumar Halder <ayan.halder@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
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In the case, when the user wants to scale and rotate a layer by 90/270
degrees, the scaling engine input dimensions' parameters ie width and
height needs to be swapped with respect to the layer's input dimensions.
This means scaling engine input height should be set to layer's input
width and scaling engine input width should be set to
layer's input height.
Signed-off-by: Ayan Halder <ayan.halder@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
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Currently the scaling engine gets enabled for a plane where the input
size differs from the composition size. As rotation is done natively
by the plane's hardware layer, we don't need the scaling engine to be
enabled.
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
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We use "mc" without initializing it if scaling is not necessary.
Fixes: 28ce675b7474 ("drm: mali-dp: Add plane upscaling support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Mihail Atanassov <Mihail.Atanassov@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
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Mali DP hardware needs pitch line sizes aligned to the bus burst
size for reads, so take that into consideration when allocating dumb
buffers. If the layer is rotated then the stride size requirement is
even larger for some hardware versions, so allocate for the worst case
scenario. Update the ->dumb_create() hook to a driver specific function
that sets the correct pitch size.
Reported-by: Ayan Halder <ayan.halder@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
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Rotated planes need a pitch size that is aligned to 8 bytes
for older DP500 and DP550 and at least 64 bytes for DP650. Replace
the malidp_hw_pitch_valid() function with one that calculates
the correct pitch alignment to take into account rotation.
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
Second set of new device support, features and cleanup for IIO in the 4.17 cycle
The uptick in staging cleanup is partly due to GSoC Applications
process being underway and one of Daniel's tasks being to try
cleaning up an IIO driver to move out of staging.
Naturally there is some normal staging cleanup progress in here
as well.
New device support
* Microchip mcp4018
- New driver supproting MCP4017, MCP4018 and MCP4019 digital pots.
* On Semiconductor lv0104cs
- New driver to support this ambient light sensor.
Cleanup
* axp20x_adc
- remove a !! in favour of clear ternary operator.
* ad2s1210 (staging cleanup)
- Reorganise to avoid ending a line with [
- Remove some unnecessary defines.
- Remove unsed variable.
* ad5380
- Replace magic 0 with IIO_CHAN_INFO_RAW
* ad5764
- Replace magic 0 with IIO_CHA_INFO_RAW
* ad7150 (staging cleanup)
- Align arguements with parenthesis.
* ad7152 (staging cleanup)
- Align arguements.
* ad7746 (staging cleanup)
- Align arguements.
* ad7816
- Remove pointless void pointer cast.
* ade7753
- Replace IIO_DEV_ATTR_CH_OFF with equivalent to avoid confusing
checkpatch (this macro didn't really help anyway). Also drop the
macro from the meter.h header.
* ade7754 (staging cleanup)
- Add names to funciton definition arguements.
- Align arguements with open parenthesis where possible.
* ade7758 (staging cleanup)
- Remove __func__ from dev_dbg statements as provided by dynamic
debug anyway.
- Align arguements with open parenthesis where possible.
* ade7759 (staging cleanup)
- Replace IIO_DEV_ATTR_CH_OFF with equiavalent to avoid confusing
checkpatch.
* adis16201 (staging cleanup)
- Headers in alphabetical order.
- Blank lines before returns.
* adis16209 (staging cleanup)
- Headers in alphabetical order
- Change some definition names to make them more meaningful (2 rounds
of this).
- Add explicit _REG prefix to register names to make them
obviously different from fields within those registers.
- Remove some superflous comments and group definitions better.
- Use a switch statement to make it semantically obvious that we
only have two options (rather than an unlimited 'else').
- Use sign_extent32 instead of open coding.
* adt7316 (staging cleanup)
- Move an export next to symbol.
* bmc150
- drop redundant __func__ in dynamic debug.
* ccs811
- Rename varaible to better reflect what it does.
* cros_ec
- Reduce sampling frequency before suspending to avoid preventing
suspend.
* dummy
- Correct whitespace in Kconfig.
- Add extra description in Kconfig.
* ds1803
- Remove a VLA which we always know is 2 long.
* hid-sensor-accel
- Replace magic number 0 by IIO_CHAN_INFO_RAW.
* hid-sensor-gyro
- Replace magic number 0 by IIO_CHAN_INFO_RAW.
* hid-sensor-light
- Replace magic number 0 by IIO_CHAN_INFO_RAW.
* hid-sensor-magn
- Replace magic number 0 by IIO_CHAN_INFO_RAW.
* lm3533
- Replace magic number 0 by IIO_CHAN_INFO_RAW
* mlx90632
- Squash a smatch warning - no runtime effect.
* stm32_dfsdm:
- Cleanup the dt bindings.
* sx9500
- Add GPIO ACPI mapping table to behave correctly when firmware
doesn't provide the mapping.
* tsl2x7x (staging cleanup)
- Fix the proximity sensor functionality.
- Remove platform data provided power functions. There are much
better ways to do this these days.
- Introduce some common functions to avoid various repititions.
- Stop using mutex_trylock when mutex_lock and wait a bit is fine.
- Improve error handling in various places.
- Drop some 'Camel case' (which wasn't actually strickly camel case
but was a bit odd.
- Drop some _available sysfs attributes for things that don't exist
(for particular supported parts).
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There are now non-volatile versions of DIMMs. Add a new entry to "enum
mem_type" and a new string in edac_mem_types[].
Signed-off-by: Tony Luck <tony.luck@intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Aristeu Rozanski <aris@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Cc: linux-acpi@vger.kernel.org
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: linux-nvdimm@lists.01.org
Link: http://lkml.kernel.org/r/20180312182430.10335-3-tony.luck@intel.com
Signed-off-by: Borislav Petkov <bp@suse.de>
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On Lenovo ThinkPad Yoga 370 (and possibly some other Lenovo models as
well) the Thunderbolt host controller sometimes comes up in such way
that the ICM firmware is not running properly. This is most likely an
issue in BIOS/firmware but as side-effect driver crashes the kernel due
to NULL pointer dereference:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000980
IP: pci_write_config_dword+0x5/0x20
Call Trace:
pcie2cio_write+0x3b/0x70 [thunderbolt]
icm_driver_ready+0x168/0x260 [thunderbolt]
? tb_ctl_start+0x50/0x70 [thunderbolt]
tb_domain_add+0x73/0xf0 [thunderbolt]
nhi_probe+0x182/0x300 [thunderbolt]
local_pci_probe+0x42/0xa0
? pci_match_device+0xd9/0x100
pci_device_probe+0x146/0x1b0
driver_probe_device+0x315/0x480
...
Instead of crashing update the driver to bail out gracefully if we
encounter such situation.
Fixes: f67cf491175a ("thunderbolt: Add support for Internal Connection Manager (ICM)")
Reported-by: Jordan Glover <Golden_Miller83@protonmail.ch>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Yehezkel Bernat <yehezkel.bernat@intel.com>
Cc: stable@vger.kernel.org
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We currently wait for the panel to mirror our intended PSR state
before continuing on both PSR enter and PSR exit. This is really
only important to do when we're entering PSR, since we want to
be sure the last frame we pushed is being served from the panel's
internal fb before shutting down the soc blocks (vop/analogix).
This patch changes the behavior such that we only wait for the
panel to complete the PSR transition when we're entering PSR, and
to skip verification when we're exiting.
Cc: Stéphane Marchesin <marcheu@chromium.org>
Cc: Sonny Rao <sonnyrao@chromium.org>
Signed-off-by: zain wang <wzz@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20180309222327.18689-7-enric.balletbo@collabora.com
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Somehow we ended up with two separate arrays of strings to describe the
"enum mem_type" values.
In edac_mc.c we have an exported list edac_mem_types[] that is used
by a couple of drivers in debug messaged.
In edac_mc_sysfs.c we have a private list that is used to display
values in:
/sys/devices/system/edac/mc/mc*/dimm*/dimm_mem_type
/sys/devices/system/edac/mc/mc*/csrow*/mem_type
This list was missing a value for MEM_LRDDR3.
The string values in the two lists were different :-(
Combining the lists, I kept the values so that the sysfs output
will be unchanged as some scripts may depend on that.
Reported-by: Borislav Petkov <bp@suse.de>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Aristeu Rozanski <aris@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Cc: linux-acpi@vger.kernel.org
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: linux-nvdimm@lists.01.org
Link: http://lkml.kernel.org/r/20180312182430.10335-2-tony.luck@intel.com
Signed-off-by: Borislav Petkov <bp@suse.de>
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This adds functionality to resend the MAPC command to an ITS node on
resume. If the ITS is powered down during suspend and the collections
are not backed by memory, the ITS will lose that state. This just sets
up the known state for the collections after the ITS is restored.
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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Some platforms power off GIC logic in suspend, so we need to
save/restore state. The distributor and redistributor registers need
to be handled in firmware code due to access permissions on those
registers, but the ITS registers can be restored in the kernel.
We limit this to systems where the ITS collections are implemented
in HW (as opposed to being backed by memory tables), as they are
the only ones that cannot be dealt with by the firmware.
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
[maz: fixed changelog, dropped DT property, limited to HCC being >0]
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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For most GICv3 implementations, enabling LPIs is a one way switch.
Once they're on, there is no turning back, which completely kills
kexec (pending tables will always be live, and we can't tell the
secondary kernel where they are).
This is really annoying if you plan to use Linux as a bootloader,
as it pretty much guarantees that the secondary kernel won't be
able to use MSIs, and may even see some memory corruption. Bad.
A workaround for this unfortunate situation is to allow the kernel
not to enable LPIs, even if the feature is present in the HW. This
would allow Linux-as-a-bootloader to leave LPIs alone, and let the
secondary kernel to do whatever it wants with them.
Let's introduce a boolean "irqchip.gicv3_nolpi" command line option
that serves that purpose.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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Booting a crash kernel while in an interrupt handler is likely
to leave the Active Priority Registers with some state that
is not relevant to the new kernel, and is likely to lead
to erratic behaviours such as interrupts not firing as their
priority is already active.
As a sanity measure, wipe the APRs clean on startup. We make
sure to wipe both group 0 and 1 registers in order to avoid
any surprise.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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Booting a crash kernel while in an interrupt handler is likely
to leave the Active Priority Registers with some state that
is not relevant to the new kernel, and is likely to lead
to erratic behaviours such as interrupts not firing as their
priority is already active.
As a sanity measure, wipe the APRs clean on startup.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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The Power Domain Controller (PDC) on QTI SoCs like SDM845 houses an
interrupt controller along with other domain control functions to handle
interrupt related functions like handle falling edge or active low which
are not detected at the GIC and handle wakeup interrupts.
The interrupt controller is on an always-on domain for the purpose of
waking up the processor. Only a subset of the processor's interrupts are
routed through the PDC to the GIC. The PDC powers on the processors'
domain, when in low power mode and replays pending interrupts so the GIC
may wake up the processor.
Signed-off-by: Archana Sathyakumar <asathyak@codeaurora.org>
Signed-off-by: Lina Iyer <ilina@codeaurora.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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Since commit 6f46aedb9c85873b ("irqchip: renesas-irqc: Add wake-up
support"), when an IRQ is used for wakeup, the INTC
block's module clock is manually kept running during system suspend, to
make sure the device stays active.
However, this explicit clock handling is merely a workaround for a
failure to properly communicate wakeup information to the device core.
Instead, set the device's power.wakeup_path field, to indicate this
device is part of the wakeup path. Depending on the PM Domain's
active_wakeup configuration, the genpd core code will keep the device
enabled (and the clock running) during system suspend when needed.
This allows for the removal of all explicit clock handling code from the
driver.
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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