| Commit message (Collapse) | Author | Age | Files | Lines |
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RC6 should always work on IVB, and should work on SNB whenever IO
remapping is disabled. RC6 never works on Ironlake. Make the default
value for the parameter follow these guidelines. Setting the value
to either 0 or 1 will force the specified behavior.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=38567
Cc: Ted Phelps <phelps@gnusto.com>
Cc: Peter <pab1612@gmail.com>
Cc: Lukas Hejtmanek <xhejtman@fi.muni.cz>
Cc: Andrew Lutomirski <luto@mit.edu>
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In i915 driver, we do not enable either rc6 or semaphores on SNB when dmar
is enabled. The new 'intel_iommu_enabled' variable signals when the
iommu code is in operation.
Cc: Ted Phelps <phelps@gnusto.com>
Cc: Peter <pab1612@gmail.com>
Cc: Lukas Hejtmanek <xhejtman@fi.muni.cz>
Cc: Andrew Lutomirski <luto@mit.edu>
CC: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
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We were checking whether the supplied edid matched the connector it was
read from. We do this in case a DDC read returns an EDID for another
device on a multifunction or otherwise interesting card. However, we
failed to include LVDS as a digital device and so rejecting an otherwise
valid EDID.
Fixes the detection of the secondary SDVO LVDS panel on the Libretto
W105.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=39216
Signed-off-by: Keith Packard <keithp@keithp.com>
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This prevents an in-kernel division by zero which happens when we are
asking for i915_chipset_val too quickly, or within a race condition
between the power monitoring thread and userspace accesses via debugfs.
The issue can be reproduced easily via the following command:
while ``; do cat /sys/kernel/debug/dri/0/i915_emon_status; done
This is particularly dangerous because it can be triggered by
a non-privileged user by just reading the debugfs entry.
This issue was also found independently by Konstantin Belousov
<kostikbel@gmail.com>, who proposed a similar patch.
Reported-by: Konstantin Belousov <kostikbel@gmail.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Acked-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: <stable@vger.kernel.org>
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
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v2: add a CPT-specific macro, make code cleaner
v3: fix commit message
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=41272
Cc: stable@kernel.org
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Keith Packard <keithp@keithp.com>
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https://bugzilla.redhat.com/show_bug.cgi?id=750006
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
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For i945 and earlier chips, the backlight frequency value had the low
bit (of 16) fixed to zero. The Pineview code path handled this by just
exposing the backlight range as 15 bits while other chips had the
backlight range limited to 0 .. 0xfffe.
This patch makes everyone take the pineview code path, providing 15
bits of backlight duty cycle range which seems more than sufficient to
me.
Daniel Mack reported that writing 1 to bit 0 of the duty cycle
register was causing problems on his Samsung X20 notebook, even when
the duty cycle value was less than the maximum backlight value. (He
tried a value of 29749 with max_brightness of 29750). This patch never
writes a '1' to that bit.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Reported-and-tested-by: Daniel Mack <zonque@gmail.com>
Cc: stable@kernel.org
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The Ivybridge eDP control register looks like a cross between a
Cougarpoint PCH DP control register and a Sandybridge eDP control
register.
Where things trivially match, share the code. Where there are any
tricky bits, just split things out into two obviously separate code paths.
Signed-off-by: Keith Packard <keithp@keithp.com>
Tested-by: Fang Xun <xunx.fang@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=41991
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On IVB C0+ with newer BIOSes, the forcewake handshake has changed. There's
now a bitfield for different driver components to keep the GT powered
on. On Linux, we centralize forcewake handling in one place, so we
still just need a single bit, but we need to use the new registers if MT
forcewake is enabled.
This needs testing on affected machines. Please reply with your
tested-by if you had problems after a BIOS upgrade and this patch fixes
them.
v2: force MT mode. shift by 16
v3: set MT force wake bits then check ECOBUS
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=42923
Tested-by: Manoj Iyer <manoj.iyer@canonical.com>
Tested-by: Robert Hooker <robert.hooker@canonical.com>
Tested-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
ktest: Check parent options for iterated tests
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Let's say we have "OUTPUT_DIR = build/${TEST_NAME}", and we're iterating
a test. In the second iteration of a test, the TEST_NAME of the test
we're repeating is not used. Instead, ${TEST_NAME} appears literally:
touch /home/rabin/kernel/test/build/${TEST_NAME}/.config ... SUCCESS
Fix this by making __eval_option() check the parent test options
for a repeated test.
Link: http://lkml.kernel.org/r/1321616131-21352-2-git-send-email-rabin@rab.in
Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
i2c: Make i2cdev_notifier_call static
i2c: Delete ANY_I2C_BUS
i2c: Fix device name for 10-bit slave address
i2c-algo-bit: Generate correct i2c address sequence for 10-bit target
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The function i2cdev_notifier_call is used only in i2c-dev file
making it static.
Also removes the following sparse warning
drivers/i2c/i2c-dev.c:582:5: warning: symbol 'i2cdev_notifier_call'
was not declared. Should it be static?
Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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Last piece of code using ANY_I2C_BUS was deleted almost 2 years ago,
so ANY_I2C_BUS can go away as well.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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10-bit addresses overlap with traditional 7-bit addresses, leading in
device name collisions. Add an arbitrary offset to 10-bit addresses to
prevent this collision. The offset was chosen so that the address is
still easily recognizable.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
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The wrong bits were put on the wire, fix that.
This fixes kernel bug #42562.
Signed-off-by: Sheng-Hui J. Chu <jeffchu@broadcom.com>
Cc: stable@kernel.org
Signed-off-by: Jean Delvare <khali@linux-fr.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: TPS65910: Fix VDD1/2 voltage selector count
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Count of selector voltage is required for regulator_set_voltage
to work via set_voltage_sel. VDD1/2 currently have it as zero,
so regulator_set_voltage won't work for VDD1/2.
Update count (n_voltages) for VDD1/2.
Output Voltage = (step value * 12.5 mV + 562.5 mV) * gain
With above expr, number of voltages that can be selected is
step value count * gain count
constant for gain count will be called VDD1_2_NUM_VOLT_COARSE
existing constant for step value count is VDD1_2_NUM_VOLTS,
use VDD1_2_NUM_VOLT_FINE instead to make clear that step value
is not the only component in deciding selectable voltage count
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (31 commits)
drm: integer overflow in drm_mode_dirtyfb_ioctl()
drivers/gpu/vga/vgaarb.c: add missing kfree
drm/radeon/kms/atom: unify i2c gpio table handling
drm/radeon/kms: fix up gpio i2c mask bits for r4xx for real
ttm: Don't return the bo reserved on error path
drm/radeon/kms: add a CS ioctl flag not to rewrite tiling flags in the CS
drm/i915: Fix inconsistent backlight level during disabled
drm, i915: Fix memory leak in i915_gem_busy_ioctl().
drm/i915: Use DPCD value for max DP lanes.
drm/i915: Initiate DP link training only on the lanes we'll be using
drm/i915: Remove trailing white space
drm/i915: Try harder during dp pattern 1 link training
drm/i915: Make DP prepare/commit consistent with DP dpms
drm/i915: Let panel power sequencing hardware do its job
drm/i915: Treat PCH eDP like DP in most places
drm/i915: Remove link_status field from intel_dp structure
drm/i915: Move common PCH_PP_CONTROL setup to ironlake_get_pp_control
drm/i915: Module parameters using '-1' as default must be signed type
drm/i915: Turn on another required clock gating bit on gen6.
drm/i915: Turn on a required 3D clock gating bit on Sandybridge.
...
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There is a potential integer overflow in drm_mode_dirtyfb_ioctl()
if userspace passes in a large num_clips. The call to kmalloc would
allocate a small buffer, and the call to fb->funcs->dirty may result
in a memory corruption.
Reported-by: Haogang Chen <haogangchen@gmail.com>
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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kbuf is a buffer that is local to this function, so all of the error paths
leaving the function should release it.
Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Split the quirks and i2c_rec assignment into separate
functions used by both radeon_lookup_i2c_gpio() and
radeon_atombios_i2c_init(). This avoids duplicating code
and cases where quirks were only added to one of the
functions.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Fixes i2c test failures when i2c_algo_bit.bit_test=1.
The hw doesn't actually require a mask, so just set it
to the default mask bits for r1xx-r4xx radeon ddc.
I missed this part the first time through.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@kernel.org
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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An unlikely race could case a bo to be returned reserved on an error path.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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into drm-fixes
* 'drm-intel-fixes' of git://people.freedesktop.org/~keithp/linux: (25 commits)
drm/i915: Fix inconsistent backlight level during disabled
drm, i915: Fix memory leak in i915_gem_busy_ioctl().
drm/i915: Use DPCD value for max DP lanes.
drm/i915: Initiate DP link training only on the lanes we'll be using
drm/i915: Remove trailing white space
drm/i915: Try harder during dp pattern 1 link training
drm/i915: Make DP prepare/commit consistent with DP dpms
drm/i915: Let panel power sequencing hardware do its job
drm/i915: Treat PCH eDP like DP in most places
drm/i915: Remove link_status field from intel_dp structure
drm/i915: Move common PCH_PP_CONTROL setup to ironlake_get_pp_control
drm/i915: Module parameters using '-1' as default must be signed type
drm/i915: Turn on another required clock gating bit on gen6.
drm/i915: Turn on a required 3D clock gating bit on Sandybridge.
drm/i915: enable cacheable objects on Ivybridge
drm/i915: add constants to size fence arrays and fields
drm/i915: Ivybridge still has fences!
drm/i915: forcewake warning fixes in debugfs
drm/i915: Fix object refcount leak on mmappable size limit error path.
drm/i915: Use mode_config.mutex in ironlake_panel_vdd_work
...
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When the brightness property is inquired while the backlight is disabled,
the driver returns a wrong value (zero) because it probes the value after
the backlight was turned off. This caused a black screen even after the
backlight is enabled again. It should return the internal backlight_level
instead, so that it won't be influenced by the backlight-enable state.
BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=41926
BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/872652
Tested-by: Kamal Mostafa <kamal@canonical.com>
Cc: Alex Davis <alex14641@yahoo.com>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Keith Packard <keithp@keithp.com>
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A call to i915_add_request() has been made in function i915_gem_busy_ioctl(). i915_add_request can fail,
so in it's exit path previously allocated memory needs to be freed.
Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
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The BIOS VBT value for an eDP panel has been shown to be incorrect on
one machine, and we haven't found any machines where the DPCD value
was wrong, so we'll use the DPCD value everywhere.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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Limit the link training setting command to the lanes needed for the
current mode. It seems vaguely possible that a monitor will try to
train the other lanes and fail in some way, so this seems like the
safer plan.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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Found a couple of bare tabs in intel_dp.c
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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Instead of going through the sequence just once, run through the whole
set up to 5 times to see if something can work. This isn't part of the
DP spec, but the BIOS seems to do it, and given that link training
failure is so bad, it seems reasonable to follow suit.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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Make sure the sequence of operations in all three functions makes
sense:
1) The backlight must be off unless the screen is running
2) The link must be running to turn the eDP panel on/off
3) The CPU eDP PLL must be running until everything is off
Signed-off-by: Keith Packard <keithp@keithp.com>
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The panel power sequencing hardware tracks the stages of panel power
sequencing and signals when the panel is completely on or off. Instead
of blindly assuming the panel timings will work, poll the panel power
status register until it shows the correct values.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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PCH eDP has many of the same needs as regular PCH DP connections,
including the DP_CTl bit settings, the TRANS_DP_CTL register.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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No persistent data was ever stored here, so link_status is instead
allocated on the stack as needed.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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Every usage of PCH_PP_CONTROL sets the PANEL_UNLOCK_REGS value to
ensure that writes will be respected, move this to a common function
to make the driver cleaner.
No functional changes.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Testing i915_panel_use_ssc for the default value was broken, so the
driver would never autodetect the correct value.
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Michel Alexandre Salim <salimma@fedoraproject.org>
Tested-by: Michel Alexandre Salim <salimma@fedoraproject.org>
Cc: stable@kernel.org
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Unlike the previous one, I don't have known testcases it fixes. I'd
rather not go through the same debug cycle on whatever testcases those
might be.
Signed-off-by: Eric Anholt <eric@anholt.net>
Cc: stable@kernel.org
Signed-off-by: Keith Packard <keithp@keithp.com>
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Fixes rendering failures in Unigine Tropics and Sanctuary and the mesa
"fire" demo.
Signed-off-by: Eric Anholt <eric@anholt.net>
Cc: stable@kernel.org
Signed-off-by: Keith Packard <keithp@keithp.com>
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IVB supports these bits as well.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Keith Packard <keithp@keithp.com>
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In preparation of to support 32 fences on Ivybdrigde.
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Keith Packard <keithp@keithp.com>
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So don't forget to restore them on resume and dump them into
the error state.
Cc: stable@kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Keith Packard <keithp@keithp.com>
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Some more unsafe debugfs access are fixed with this patch. I tested all reads,
but didn't thoroughly test the writes.
Cc: "Nicolas Kalkhof" <nkalkhof@web.de>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Keith Packard <keithp@keithp.com>
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I've been seeing memory leaks on my system in the form of large
(300-400MB) GEM objects created by now-dead processes laying around
clogging up memory. I usually notice when it gets to about 1.2GB of
them. Hopefully this clears up the issue, but I just found this bug
by inspection.
Signed-off-by: Eric Anholt <eric@anholt.net>
Cc: stable@kernel.org
Signed-off-by: Keith Packard <keithp@keithp.com>
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Use of the struct_mutex is not correct for locking in mode setting paths.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Kernels with no iommu support cannot ever need the Ironlake
work-around, so never enable it in that case.
Might be better to completely remove the work-around from the kernel
in this case?
Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
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The semi-colon is a typo here and it makes the if statement
unconditional.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
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Shouldn't hide these behind _DRIVER, they're all KMS-related.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
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... not DISPLAY_VGA, because we ignore the VGA subclass with our
class_mask.
It confused me until Chris Wilson clued me up.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
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