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0 isn't a valid rotation property value, so let's set the initial value
of the property to BIT(DRM_ROTATE_0) instead.
v2: Drop the BIT()
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1474907460-10717-7-git-send-email-ville.syrjala@linux.intel.com
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The global mode_config.rotation_property is going away, switch over to
per-plane rotation_property.
v2: Propagate error upwards (Boris)
v3: Drop the BIT()
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1474907460-10717-6-git-send-email-ville.syrjala@linux.intel.com
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The global mode_config.rotation_property is going away, switch over to
per-plane rotation_property.
v2: Drop the BIT()
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Brian Starkey <brian.starkey@arm.com>
Cc: Mali DP Maintainers <malidp@foss.arm.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Brian Starkey <brian.starkey@arm.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1474907460-10717-5-git-send-email-ville.syrjala@linux.intel.com
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Not all planes on the system may support the same rotations/reflections,
so make it possible to create a separate property for each plane.
This way userspace gets told exactly which rotations/reflections are
possible for each plane.
v2: Add drm_plane_create_rotation_property() helper
v3: Drop the BIT(), __builtin_ffs(x) - 1,
Moar WARNs for bad parameters
Deal with superfluous code shuffling
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (v1)
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1474907460-10717-4-git-send-email-ville.syrjala@linux.intel.com
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The rotation property should only accept exactly one rotation angle
at once. Let's reject attempts to set none or multiple angles.
Testcase: igt/kms_rotation_crc/bad-rotation
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1474907460-10717-3-git-send-email-ville.syrjala@linux.intel.com
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We have intel_rotation_90_or_270() in i915 to check if the rotation is
90 or 270 degrees. Similar checks are elsewhere in drm, so let's move
the helper into a central place and use it everwhere.
v2: Drop the BIT()
Convert all new intel_rotation_90_or_270() calls
Deal with superfluous code shuffling
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (v1)
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1474907460-10717-2-git-send-email-ville.syrjala@linux.intel.com
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Currently the driver crashes if smu7_enable_dpm_tasks() returns early,
which it does if DPM is already active. It seems to be better just to
continue anyway, at least I haven't noticed any ill effects. It's also
unclear at what state the hardware was left by the previous driver, so
IMO it's better to always fully initialize.
Way to reproduce:
with GPU passthrough.
forced power off the VM or forced reset the VM
without shutting down the Os.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: JimQu <Jim.Qu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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No need to retain previous settings as this is the first time
we set pg_flags. Probably a copy/paste typo from the CZ code.
Avoids confusion.
No change in behavior as adev is kzallocated.
Reviewed-by: Tom St Denis <tom.stdenis@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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It's technically an MC register so make sure we initialize it
in the MC module rather than the gfx module. Since other bits
in the same register are used to enable ATC CG features make
sure we apply the golden setting first.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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We need this for more than just DCE. Move it out of the DCE modules
and into the device code. This way we can be sure the scratch registers
are initialized properly before we run asic_init which happens before
DCE IPs are restored.
Fixes atombios hangs in asic_init.
Reviewed-by: JimQu <Jim.Qu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This is already handled by the dce IP modules in their
suspend and resume code. No need to do it again.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Limit clocks on a specific HD86xx part to avoid
crashes (while awaiting an appropriate PP fix).
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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Casting of voltage values to a larger size results in
overwriting adjacent memory in the structure.
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Although I am leaving Synopsys, I would like to keep working with the linux
kernel community and help in what you might find useful. For that I am
sending this patch to change my contact e-mail.
Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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fence referencing was out of balance. It was not taking any ref to the
fence at creating time, but it was putting a reference when freeing the
sync file.
This patch fixes the balancing issue by getting a reference for the fence
when creating the sync_file.
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1476899313-22241-1-git-send-email-gustavo@padovan.org
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Use tabs instead of spaces.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1475913318-12275-1-git-send-email-peter.griffin@linaro.org
Link: http://patchwork.freedesktop.org/patch/msgid/1476238699-25820-1-git-send-email-jiang.biao2@zte.com.cn
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Make sure we have at least one port before attempting to register a
console.
Currently, at least one driver binds to a "dummy" interface and requests
zero ports for it. Should such an interface also lack endpoints, we get
a NULL-deref during probe.
Fixes: e5b1e2062e05 ("USB: serial: make minor allocation dynamic")
Cc: stable <stable@vger.kernel.org> # 3.11
Signed-off-by: Johan Hovold <johan@kernel.org>
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If the event gets canceled we also need to put away the fence
reference it holds.
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1476975005-30441-3-git-send-email-gustavo@padovan.org
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Currently it's entirely possible to go through the link training step
without first determining the lane_count, which is silly since we end up
doing a bunch of aux transfers of size = 0, as highlighted by
WARN_ON(!msg->buffer != !msg->size), and can only ever result in a
'failed to update link training' message. This can be observed during
intel_dp_long_pulse where we can do the link training step, but before
we have had a chance to set the link params. To avoid this we add an
extra check for the lane_count in intel_dp_check_link_status, which
should prevent us from doing the link training step prematurely.
v2: add WARN_ON_ONCE and FIXME comment (Ville)
References: https://bugs.freedesktop.org/show_bug.cgi?id=97344
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1476912593-10019-1-git-send-email-matthew.auld@intel.com
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
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If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Before this patch:
$ modinfo drivers/gpio/gpio-ts4800.ko | grep alias
$
After this patch:
$ modinfo drivers/gpio/gpio-ts4800.ko | grep alias
alias: of:N*T*Ctechnologic,ts4800-gpioC*
alias: of:N*T*Ctechnologic,ts4800-gpio
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The GPIO_GET_LINEEVENT_IOCTL currently ignores unknown or undefined
linehandle and lineevent flags. From a backwards and forwards compatibility
viewpoint it is highly desirable to reject unknown flags though.
On one hand an application that is using newer flags and is running on
an older kernel has no way to detect if the new flags were handled
correctly if they are silently discarded.
On the other hand an application that (accidentally) passes undefined flags
will run fine on an older kernel, but may break on a newer kernel when
these flags get defined.
Ensure that requests that have undefined flags set are rejected with an
error, rather than silently discarding the undefined flags.
Cc: stable@vger.kernel.org
Fixes: 61f922db7221 ("gpio: userspace ABI for reading GPIO line events")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The GPIO_GET_LINEHANDLE_IOCTL currently ignores unknown or undefined
linehandle flags. From a backwards and forwards compatibility viewpoint it
is highly desirable to reject unknown flags though.
On one hand an application that is using newer flags and is running on
an older kernel has no way to detect if the new flags were handled
correctly if they are silently discarded.
On the other hand an application that (accidentally) passes undefined flags
will run fine on an older kernel, but may break on a newer kernel when
these flags get defined.
Ensure that requests that have undefined flags set are rejected with an
error, rather than silently discarding the undefined flags.
Cc: stable@vger.kernel.org
Fixes: d7c51b47ac11 ("gpio: userspace ABI for reading/writing GPIO lines")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The GPIOHANDLE_GET_LINE_VALUES_IOCTL handler allocates a gpiohandle_data
struct on the stack and then passes it to copy_to_user(). But depending on
the number of requested line handles the struct is only partially
initialized.
This exposes the previous, potentially sensitive, stack content to the
issuing userspace application. To avoid this make sure that the struct is
fully initialized.
Cc: stable@vger.kernel.org
Fixes: d7c51b47ac11 ("gpio: userspace ABI for reading/writing GPIO lines")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Fix the poorly indented port parameters to the aux ctl and data
reg functions. This was fallout from the s/i915_mmio_reg_t/i915_reg_t/
that happened during the review of commit f0f59a00a1c9 ("drm/i915:
Type safe register read/write")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1476208368-5710-5-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Jim Bride <jim.bride@linux.intel.com>
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Now that we use the AUX and GMBUS assignment from VBT for all ports,
let's clean up the sanitization of the port information a bit.
Previosuly we only did this for port E, and only complained about a
non-standard assignment for the other ports. But as we know that
non-standard assignments are a fact of life, let's expand the
sanitization to all the ports.
v2: Include a commit message, fix up the comments a bit
v3: Don't clobber other ports if the current port has no alternate aux ch/ddc pin
Cc: stable@vger.kernel.org
Cc: Maarten Maathuis <madman2003@gmail.com>
Tested-by: Maarten Maathuis <madman2003@gmail.com>
References: https://bugs.freedesktop.org/show_bug.cgi?id=97877
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1476208368-5710-4-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Jim Bride <jim.bride@linux.intel.com> (v2)
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The VBT provides the platform a way to mix and match the DDI ports vs.
GMBUS pins. Currently we only trust the VBT for DDI E, which I suppose
has no standard GMBUS pin assignment. However, there are machines out
there that use a non-standard mapping for the other ports as well.
Let's start trusting the VBT on this one for all ports on DDI platforms.
I've structured the code such that other platforms could easily start
using this as well, by simply filling in the ddi_port_info. IIRC there
may be CHV system that might actually need this.
v2: Include a commit message, include a debug message during init
Cc: stable@vger.kernel.org
Cc: Maarten Maathuis <madman2003@gmail.com>
Tested-by: Maarten Maathuis <madman2003@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97877
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1476208368-5710-3-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Jim Bride <jim.bride@linux.intel.com>
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The VBT provides the platform a way to mix and match the DDI ports vs.
AUX channels. Currently we only trust the VBT for DDI E, which has no
corresponding AUX channel of its own. However it is possible that some
board might use some non-standard DDI vs. AUX port routing even for
the other ports. Perhaps for signal routing reasons or something,
So let's generalize this and trust the VBT for all ports.
For now we'll limit this to DDI platforms, as we trust the VBT a bit
more there anyway when it comes to the DDI ports. I've structured
the code in a way that would allow us to easily expand this to
other platforms as well, by simply filling in the ddi_port_info.
v2: Drop whitespace changes, keep MISSING_CASE() for unknown
aux ch assignment, include a commit message, include debug
message during init
Cc: stable@vger.kernel.org
Cc: Maarten Maathuis <madman2003@gmail.com>
Tested-by: Maarten Maathuis <madman2003@gmail.com>
References: https://bugs.freedesktop.org/show_bug.cgi?id=97877
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1476208368-5710-2-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Jim Bride <jim.bride@linux.intel.com>
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The line offset that is used as an index into the descs array is provided
by userspace and might go beyond the bounds of the array. If that happens
undefined behavior will occur.
Make sure that the offset is within the bounds of the desc array and reject
any requests that specify a value outside of it.
Cc: stable@vger.kernel.org
Fixes: 61f922db7221 ("gpio: userspace ABI for reading GPIO line events")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The GPIOHANDLE_GET_LINE_VALUES_IOCTL handler allocates a gpiohandle_data
struct on the stack and then passes it to copy_to_user(). But only the
first element of the values array in the struct is set, which leaves the
struct partially initialized.
This exposes the previous, potentially sensitive, stack content to the
issuing userspace application. To avoid this make sure that the struct is
fully initialized.
Cc: stable@vger.kernel.org
Fixes: 61f922db7221 ("gpio: userspace ABI for reading GPIO line events")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The line offset that is used as an index into the descs array is provided
by userspace and might go beyond the bounds of the array. If that happens
undefined behavior will occur.
Make sure that the offset is within the bounds of the desc array and reject
any requests that specify a value outside of it.
Cc: stable@vger.kernel.org
Fixes: d7c51b47ac11 ("gpio: userspace ABI for reading/writing GPIO lines")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The GPIO_GET_CHIPINFO_IOCTL handler allocates a gpiochip_info struct on the
stack and then passes it to copy_to_user(). But depending on the length of
the GPIO chip name and label the struct is only partially initialized.
This exposes the previous, potentially sensitive, stack content to the
issuing userspace application. To avoid this make sure that the struct is
fully initialized.
Cc: stable@vger.kernel.org
Fixes: 521a2ad6f862 ("gpio: add userspace ABI for GPIO line information")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The current line offset validation is off by one. Depending on the data
stored behind the descs array this can either cause undefined behavior or
disclose arbitrary, potentially sensitive, memory to the issuing userspace
application.
Make sure that offset is within the bounds of the desc array.
Cc: stable@vger.kernel.org
Fixes: 521a2ad6f862 ("gpio: add userspace ABI for GPIO line information")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Dropping WA because it was for early steppings.
It is fixed in newer preproduction and all production revisions.
v2: add references, updated commit message
References: HSD#2126385, HSD#2131381, BSID#0764
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Winiarski <michal.winiarski@intel.com>
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1476977460-28088-1-git-send-email-arkadiusz.hiler@intel.com
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The libfc stack assigns exchange IDs based on the CPU the request
was received on, so we need to send the responses via the same CPU.
Otherwise the send logic gets confuses and responses will be delayed,
causing exchange timeouts on the initiator side.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Cc: stable@vger.kernel.org # 4.5+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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Update the debug statements to match those from libfc.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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Not every failure is due to out-of-memory; the ACLs might not be
set, too. So return a detailed error code in ft_sess_create()
instead of just a NULL pointer.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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When allocating a new command we should add the pointer to the
debug statements; that allows us to match this with other debug
statements for handling data.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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target_sess_cmd_list_waiting() might hit on a condition where
the kref for the command is already 0, but the destructor has
not been called yet (or is stuck in waiting for a spin lock).
Rather than leaving the command on the list we should explicitly
remove it to avoid race issues later on.
Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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drm-fixes
2 more patches to stabilize the new MMUv2 support.
* 'drm-etnaviv-fixes' of git://git.pengutronix.de/lst/linux:
drm/etnaviv: block 64K of address space behind each cmdstream
drm/etnaviv: ensure write caches are flushed at end of user cmdstream
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ssh://people.freedesktop.org/~syeh/repos_linux into drm-fixes
vmwgfx cleanups and fixes.
* 'drm-vmwgfx-fixes' of ssh://people.freedesktop.org/~syeh/repos_linux:
drm/vmwgfx: Adjust checks for null pointers in 13 functions
drm/vmwgfx: Use memdup_user() rather than duplicating its implementation
drm/vmwgfx: Use kmalloc_array() in vmw_surface_define_ioctl()
drm/vmwgfx: Avoid validating views on view destruction
drm/vmwgfx: Limit the user-space command buffer size
drm/vmwgfx: Remove a leftover debug printout
drm/vmwgfx: Allow resource relocations on byte boundaries
drm/vmwgfx: Enable SVGA_3D_CMD_DX_TRANSFER_FROM_BUFFER command
drm/vmwgfx: Remove call to reservation_object_test_signaled_rcu before wait
drm/vmwgfx: Replace numeric parameter like 0444 with macro
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into drm-fixes
One small fix for Armada, where the clock prepare/enable counts were
going awry.
* 'drm-armada-fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
drm/armada: fix clock counts
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http://git.agner.ch/git/linux-drm-fsl-dcu into drm-fixes
This are some fixes which I hoped to still get into v4.9. I used to
test them here since about 2 weeks and Meng came around to test it
on the second platform making use of this IP too, so they are well
tested now.
* 'fixes-for-v4.9-rc2' of http://git.agner.ch/git/linux-drm-fsl-dcu:
drm/fsl-dcu: enable pixel clock when enabling CRTC
drm/fsl-dcu: do not transfer registers in mode_set_nofb
drm/fsl-dcu: do not transfer registers on plane init
drm/fsl-dcu: enable TCON bypass mode by default
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If 'clk_hw_register()' fails, it is likely that we expect to return an
error instead of a valid pointer (which would mean success).
Fix commit f5644f10dcfb ("clk: at91: Migrate to clk_hw based registration
and OF APIs")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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It turns out we need to ping the watchdog hardware on resume when we
re-program it. Otherwise this causes inadvertent reset to trigger
right after the resume is complete.
Fixes: 058dfc767008 (ACPI / watchdog: Add support for WDAT hardware watchdog)
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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According to spec: "KBL re-uses SKL values, except where
specific KBL values are listed."
And recently spec has changed adding different table for Display Port only.
But for all SKUs (H,S,U,Y) we have slightly different values.
v2: Fix wrong condition spotted by Jani.
v3: Fix 7th entry of KBL H and S table - by Manasi.
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1476806256-13318-1-git-send-email-rodrigo.vivi@intel.com
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No functional change.
Only moving this fixup block out of ddi_translation definitions
so we can split skl and kbl cleanly.
v2: Remove useless comment. (Ville)
Cc: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1475258757-29540-1-git-send-email-rodrigo.vivi@intel.com
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struct clocksource is also used by the clk notifier callback, to
unregister and re-register the clocksource with a different clock rate.
clocksource_mmio_init does not pass back a pointer to the struct used,
and the clk notifier callback assumes that the struct clocksource in
struct sun5i_timer_clksrc is valid. This results in a kernel NULL
pointer dereference when the hstimer clock is changed:
Unable to handle kernel NULL pointer dereference at virtual address 00000004
[<c03a4678>] (clocksource_unbind) from [<c03a46d4>] (clocksource_unregister+0x2c/0x44)
[<c03a46d4>] (clocksource_unregister) from [<c0a6f350>] (sun5i_rate_cb_clksrc+0x34/0x3c)
[<c0a6f350>] (sun5i_rate_cb_clksrc) from [<c035ea50>] (notifier_call_chain+0x44/0x84)
[<c035ea50>] (notifier_call_chain) from [<c035edc0>] (__srcu_notifier_call_chain+0x44/0x60)
[<c035edc0>] (__srcu_notifier_call_chain) from [<c035edf4>] (srcu_notifier_call_chain+0x18/0x20)
[<c035edf4>] (srcu_notifier_call_chain) from [<c0670174>] (__clk_notify+0x70/0x7c)
[<c0670174>] (__clk_notify) from [<c06702c0>] (clk_propagate_rate_change+0xa4/0xc4)
[<c06702c0>] (clk_propagate_rate_change) from [<c0670288>] (clk_propagate_rate_change+0x6c/0xc4)
Revert the commit for now. clocksource_mmio_init can be made to pass back
a pointer, but the code churn and usage of an inner struct might not be
worth it.
Fixes: 157dfadef832 ("clocksource/drivers/timer_sun5i: Replace code by clocksource_mmio_init")
Reported-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Cc: linux-sunxi@googlegroups.com
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20161018054918.26855-1-wens@csie.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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