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path: root/drivers/gpu/drm/radeon/radeon.h
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2010-09-02drm/radeon/kms: remove useless clock codeAlex Deucher1-2/+0
This code was originally for forcing some clocks on certain asics. However, this code was later moved to asic specific functions for all of the affected asics. The only users of the original code at this point were r600, rv770, and evergreen and the code was not relevant for those asics. So, remove it. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-08-30drm/radeon/kms: fix a regression on r7xx AGP due to the HDP flush fixAlex Deucher1-0/+6
commit: 812d046915f48236657f02c06d7dc47140e9ceda drm/radeon/kms/r7xx: add workaround for hw issue with HDP flush breaks on AGP boards since there is no VRAM gart table. This patch fixes the issue by creating a VRAM scratch page so that can be used on both AGP and PCIE. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=29834 Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-08-10drm/radeon/kms: unify i2c handlingAlex Deucher1-0/+2
Previously we added i2c buses as needed when enumerating connectors power management, etc. This only exposed the actual buses used and could have lead to the same buse getting created more than once if one buses was used for more than one purpose. This patch sets up all i2c buses on the card in one place and users of the buses just point back to the one instance. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-08-04drm: move ttm global code to core drmDave Airlie1-1/+1
I wrote this for the prime sharing work, but I also noticed other external non-upstream drivers from a large company carrying a similiar patch, so I may as well ship it in master. Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-08-02drm/radeon: add basic zmask/hiz support (v4)Dave Airlie1-0/+2
This interface allows userspace to request hyperz support, it probably needs more locking, and really reporting that you can have hyperz is racy since someone else might get it before you do. v2: modify so we pass 0 valued packets to let DDX/r300c keep working. also fixed incorrect 0x4f1c reference. v3: fixup zb_bw_cntl so older drivers keep working v4: add locking, fixup SC_HYPERZ_EN - patch stream to disable hiz Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-08-02Merge tag 'v2.6.35-rc6' into drm-radeon-nextDave Airlie1-0/+1
Need this to avoid conflicts with future radeon fixes
2010-08-02drm/radeon/kms: add ioport register accessAlex Deucher1-0/+25
This is required for the NB_MISC regs on rs780/rs880 which means HDMI/DVI/DP ports using PCIEPHY won't work without it. It might also help with s/r (asic init) issues on other atombios cards. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=28774 and similar issues reported by Alberto Milone. [airlied: Squash io fix patch] Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Tested-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-08-02drm/radeon/kms: track audio engine state, do not use not setup timerRafał Miłecki1-0/+1
This is needed to enable audio support on devices using polling. In case user decides to disable audio (module parameter) we still will try to use timer in r600_audio_enable_polling. This would lead to BUG in kernel/timer.c. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-08-02drm/radeon/kms/r6xx+: add query for tile config (v2)Alex Deucher1-0/+3
Userspace needs this information to access tiled buffers via the CPU. v2: rebased on evergreen accel changes Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-08-02drm/radeon/kms: add support for internal thermal sensors (v3)Alex Deucher1-0/+13
rv6xx/rv7xx/evergreen families supported; older asics did not have an internal thermal sensor. Note, not all oems use the internal thermal sensor, so it's only exposed in cases where it is used. Note also, that most laptops use an oem specific ACPI solution for GPU thermal information rather than using the internal thermal sensor directly. v2: export millidegrees celsius, use hwmon device properly. v3: fix Kconfig Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-08-02drm/radeon: Add support for the ATIF ACPI method to the radeon driverAlberto Milone1-0/+7
By calling the ATIF method in the radeon driver we can make sure that hotkeys such as the video switch key emit ACPI events when pressed. agd5f: fix warning Signed-off-by: Alberto Milone <alberto.milone@canonical.com> Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-07-16drm/radeon/kms: fix gtt MC base alignment on rs4xx/rs690/rs740 asicsAlex Deucher1-0/+1
The asics in question have the following requirements with regard to their gart setups: 1. The GART aperture size has to be in the form of 2^X bytes, where X is from 25 to 31 2. The GART aperture MC base has to be aligned to a boundary equal to the size of the aperture. 3. The GART page table has to be aligned to the boundary equal to the size of the table. 4. The GART page table size is: table_entry_size * (aperture_size / page_size) 5. The GART page table has to be allocated in non-paged, non-cached, contiguous system memory. This patch takes care 2. The rest should already be handled properly. This fixes a regression noticed by: Torsten Kaiser <just.for.lkml@googlemail.com> Tested-by: Torsten Kaiser <just.for.lkml@googlemail.com> Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-07-01DRM / radeon / KMS: Fix hibernation regression related to radeon PM (was: ↵Rafael J. Wysocki1-1/+2
Re: [Regression, post-2.6.34] Hibernation broken on machines with radeon/KMS and r300) There is a regression from 2.6.34 related to the recent radeon power management changes, caused by attempting to cancel a delayed work item that's never been scheduled. However, the code as is has some other issues potentially leading to visible problems. First, the mutex around cancel_delayed_work() in radeon_pm_suspend() doesn't really serve any purpose, because cancel_delayed_work() only tries to delete the work's timer. Moreover, it doesn't prevent the work handler from running, so the handler can do some wrong things if it wins the race and in that case it will rearm itself to do some more wrong things going forward. So, I think it's better to wait for the handler to return in case it's already been queued up for execution. Also, it should be prevented from rearming itself in that case. Second, in radeon_set_pm_method() the cancel_delayed_work() is not sufficient to prevent the work handler from running and queing up itself for the next run (the failure scenario is that cancel_delayed_work() returns 0, so the handler is run, it waits on the mutex and then rearms itself after the mutex has been released), so again the work handler should be prevented from rearming itself in that case.. Finally, there's a potential deadlock in radeon_pm_fini(), because cancel_delayed_work_sync() is called under rdev->pm.mutex, but the work handler tries to acquire the same mutex (if it wins the race). Fix the issues described above. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Reviewed-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-07-01drm/radeon/kms/igp: fix possible divide by 0 in bandwidth code (v2)Alex Deucher1-0/+1
Some IGP systems specify the system memory clock in the Firmware table rather than the IGP info table. Check both and make sure we have a value system memory clock value. v2: make sure rs690_pm_info is called on rs780/rs880 as well. fixes a regression since 07d4190327b02ab3aaad25a2d168f79d92e8f8c2. Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de> Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-06-08drm/radeon/kms/pm: track current voltage (v2)Alex Deucher1-0/+1
track the current voltage level and avoid setting it if the requested voltage is already set. v2: check voltage type before checking current voltage Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-06-08drm/radeon/kms/pm: add mid profileAlex Deucher1-4/+7
This adds an additional profile, mid, to the pm profile code which takes the place of the old low profile. The default behavior remains the same, e.g., auto profile now selects between mid and high profiles based on power source, however, you can now manually force the low profile which was previously only available as a dpms off state. Enabling the low profile when the displays are on has been known to cause display corruption in some cases. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-06-03drm/radeon/kms/pm: add support for SetVoltage cmd table (V2)Alex Deucher1-0/+1
- This enables voltage adjustment on r6xx+ and certain r5xx asics. - Voltage drop support is already available for most r1xx-r5xx asics. V2: endian fix for voltage table. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-05-24drm/radeon/kms: release AGP bridge at suspendJerome Glisse1-0/+1
I think it's good to release the AGP bridge at suspend and reacquire it at resume. Also fix : https://bugzilla.kernel.org/show_bug.cgi?id=15969 Signed-off-by: Jerome Glisse <jglisse@redhat.com> Cc: stable <stable@kernel.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-05-21drm/radeon/kms: record object that have been list reservedJerome Glisse1-0/+1
list reservation was too optimistic about ttm object reservation and could think that an object reserved by some other process as reserved by the list reservation which was false. Thus when unreserving the list it might unreserve object that it didn't reserved in the list. Sorry if it's hard to follow but this kind of things are just causing headheck. Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-05-18drm/radeon/kms/pm: rework power managementAlex Deucher1-30/+57
- Separate dynpm and profile based power management methods. You can select the pm method by echoing the selected method ("dynpm" or "profile") to power_method in sysfs. - Expose basic 4 profile in profile method "default" - default clocks "auto" - select between low and high based on ac/dc state "low" - DC, low power mode "high" - AC, performance mode The current base profile is "default", but it should switched to "auto" once we've tested on more systems. Switching the state is a matter of echoing the requested profile to power_profile in sysfs. The lowest power states are selected automatically when dpms turns the monitors off in all states but default. - Remove dynamic fence-based reclocking for the moment. We can revisit this later once we have basic pm in. - Move pm init/fini to modesetting path. pm is tightly coupled with display state. Make sure display side is initialized before pm. - Add pm suspend/resume functions to make sure pm state is properly reinitialized on resume. - Remove dynpm module option. It's now selectable via sysfs. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-05-18drm/radeon/kms/pm: add support for no display power statesAlex Deucher1-2/+5
The lowest power states often cause display problems, so only enable them when all displays are off. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-05-18radeon: Split out ring locking and allocationMatthew Garrett1-0/+2
We need to handle the ring while we've already locked it, so split out the allocation and commit functions in order to allow them to be used. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-05-18radeon: Try harder to ensure we reclock in vblankMatthew Garrett1-0/+1
The vblank interrupt on r600 doesn't seem to be especially reliable, so perform some sanity checks before the actual reclock. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-05-18radeon: Unmap vram pages when reclockingMatthew Garrett1-0/+1
Touching vram while the card is reclocking can lead to lockups. Unmap any pages that could be touched by the CPU and block any accesses to vram until the reclocking is complete. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-05-18drm/radeon/kms/pm: rework power managementAlex Deucher1-2/+5
Add two new sysfs attributes: - dynpm - power_state Echoing 0/1 to dynpm disables/enables dynamic power management. The driver scales the sclk dynamically based on the number of queued fences. dynpm only scales sclk dynamically in single head mode. Echoing x.y to power_state selects a static power state (x) and clock mode (y). This allows you to statically select a power state and clock mode. Selecting a static clock mode will disable dynpm. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-05-18drm/radeon/kms/pm: add additional asic callbacksAlex Deucher1-0/+3
- pm_misc() - handles voltage, pcie lanes, and other non clock related power mode settings. Currently disabled. Needs further debugging - pm_prepare() - disables crtc mem requests right now. All memory clients need to be disabled when changing memory clocks. This function can be expanded to include disabling fb access as well. - pm_finish() - enable active memory clients. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-05-18drm/radeon/kms/pm: restore default power state on exitAlex Deucher1-1/+2
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-05-18drm/radeon/kms: minor pm cleanupsAlex Deucher1-10/+3
- remove non_clock_info struct - track power state misc flags Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-05-18drm/radeon/kms/pm: add asic specific callbacks for getting power state (v2)Alex Deucher1-7/+18
This also simplifies the code and enables reclocking with multiple heads active by tracking whether the power states are single or multi-head capable. Eventually, we will want to select a power state based on external factors (AC/DC state, user selection, etc.). (v2) Update for evergreen Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-05-18drm/radeon/kms/pm: add asic specific callbacks for setting power state (v2)Alex Deucher1-0/+4
(v2) Add evergreen vbl checks Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-05-18drm/radeon/kms: add support for gui idle interrupts (v4)Alex Deucher1-0/+4
Useful for certain power management operations. You need to wait for the GUI engine (2D, 3D, CP, etc.) to be idle before changing clocks or adjusting engine parameters. (v2) Fix gui idle enable on pre-r6xx asics (v3) The gui idle interrrupt status bit is permanently asserted on pre-r6xx chips, but the interrrupt is still generated. workaround it in the driver. (v4) Add support for evergreen Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-05-18drm/radeon/kms: add gui_idle callbackAlex Deucher1-0/+2
Check to see if the GUI engine and related blocks (2D, 3D, CP, etc) are idle or not. There are a number of cases when we need to know if the drawing engine is busy. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-23drm/radeon/kms: HDMI irq supportChristian Koenig1-0/+3
Implements irq support for HDMI audio output. Now the polling timer is only enabled if irq support isn't available. Signed-off-by: Christian König <deathsimple@vodafone.de> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-23drm/radeon/kms: rework audio polling timerChristian König1-6/+8
Rework HDMI audio polling timer, only enable it when at least one HDMI encoder needs it. Preparation for replacing it with irq support. Signed-off-by: Christian König <deathsimple@vodafone.de> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-20Merge branch 'drm-radeon-evergreen-accel' into drm-core-nextDave Airlie1-1/+34
* drm-radeon-evergreen-accel: drm/radeon: fix cypress firmware typo. drm/radeon/kms/evergreen: add hpd support drm/radeon/kms/evergreen: implement irq support drm/radeon/kms/evergreen: setup and enable the CP drm/radeon/kms/evergreen: implement gfx init drm/radeon/kms/evergreen: add soft reset function drm/radeon/kms/evergreen: add gart support drm/radeon/kms: add support for evergreen power tables drm/radeon/kms: update atombios.h power tables for evergreen
2010-04-20Merge branch 'drm-fbdev-cleanup' into drm-core-nextDave Airlie1-3/+0
* drm-fbdev-cleanup: drm/fb: remove drm_fb_helper_setcolreg drm/kms/fb: use slow work mechanism for normal hotplug also. drm/kms/fb: add polling support for when nothing is connected. drm/kms/fb: provide a 1024x768 fbcon if no outputs found. drm/kms/fb: separate fbdev connector list from core drm connectors drm/kms/fb: move to using fb helper crtc grouping instead of core crtc list drm/fb: fix fbdev object model + cleanup properly. Conflicts: drivers/gpu/drm/i915/i915_drv.h drivers/gpu/drm/nouveau/nouveau_drv.h
2010-04-09drm/radeon/kms/evergreen: add hpd supportAlex Deucher1-1/+2
Hot plug detect (hpd) for digital monitors Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-09drm/radeon/kms/evergreen: implement irq supportAlex Deucher1-1/+4
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-09drm/radeon/kms/evergreen: setup and enable the CPAlex Deucher1-0/+4
The command processor (CP) fetches command buffers and feeds the GPU. This patch requires the evergreen family me and pfp ucode files. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-09drm/radeon/kms/evergreen: implement gfx initAlex Deucher1-0/+25
This initializes the gfx engine so accel can eventually be used. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-07drm/fb: fix fbdev object model + cleanup properly.Dave Airlie1-3/+0
The fbdev layer in the kms code should act like a consumer of the kms services and avoid having relying on information being store in the kms core structures in order for it to work. This patch a) removes the info pointer/psuedo palette from the core drm_framebuffer structure and moves it to the fbdev helper layer, it also removes the core drm keeping a list of kernel kms fbdevs. b) migrated all the fb helper functions out of the crtc helper file into the fb helper file. c) pushed the fb probing/hotplug control into the driver d) makes the surface sizes into a structure for ease of passing This changes the intel/radeon/nouveau drivers to use the new helper. Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-06drm/radeon/kms: simplify & improve GPU reset V2Jerome Glisse1-0/+1
This simplify and improve GPU reset for R1XX-R6XX hw, it's not 100% reliable here are result: - R1XX/R2XX works bunch of time in a row, sometimes it seems it can work indifinitly - R3XX/R3XX the most unreliable one, sometimes you will be able to reset few times, sometimes not even once - R5XX more reliable than previous hw, seems to work most of the times but once in a while it fails for no obvious reasons (same status than previous reset just no same happy ending) - R6XX/R7XX are lot more reliable with this patch, still it seems that it can fail after a bunch (reset every 2sec for 3hour bring down the GPU & computer) This have been tested on various hw, for some odd reasons i wasn't able to lockup RS480/RS690 (while they use to love locking up). Note that on R1XX-R5XX the cursor will disapear after lockup haven't checked why, switch to console and back to X will restore cursor. Next step is to record the bogus command that leaded to the lockup. V2 Fix r6xx resume path to avoid reinitializing blit module, use the gpu_lockup boolean to avoid entering inifinite waiting loop on fence while reiniting the GPU Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-06drm/radeon/kms: rename gpu_reset to asic_resetJerome Glisse1-3/+3
Patch rename gpu_reset to asic_reset in prevision of having gpu_reset doing more stuff than just basic asic reset. Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-06drm/radeon/kms: fence cleanup + more reliable GPU lockup detection V4Jerome Glisse1-45/+59
This patch cleanup the fence code, it drops the timeout field of fence as the time to complete each IB is unpredictable and shouldn't be bound. The fence cleanup lead to GPU lockup detection improvement, this patch introduce a callback, allowing to do asic specific test for lockup detection. In this patch the CP is use as a first indicator of GPU lockup. If CP doesn't make progress during 1second we assume we are facing a GPU lockup. To avoid overhead of testing GPU lockup frequently due to fence taking time to be signaled we query the lockup callback every 500msec. There is plenty code comment explaining the design & choise inside the code. This have been tested mostly on R3XX/R5XX hw, in normal running destkop (compiz firefox, quake3 running) the lockup callback wasn't call once (1 hour session). Also tested with forcing GPU lockup and lockup was reported after the 1s CP activity timeout. V2 switch to 500ms timeout so GPU lockup get call at least 2 times in less than 2sec. V3 store last jiffies in fence struct so on ERESTART, EBUSY we keep track of how long we already wait for a given fence V4 make sure we got up to date cp read pointer so we don't have false positive Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-03-31drm/radeon/kms: add hw_i2c module optionAlex Deucher1-0/+1
Turn off hw i2c by default except for mm i2c which is hw only until we sort out the remaining prescale issues on older chips. hw i2c can be enabled with hw_i2c=1. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-03-31drm/radeon/kms: display watermark updates (v2)Alex Deucher1-0/+2
- Add module option to force the display priority 0 = auto, 1 = normal, 2 = high - Default to high on r3xx/r4xx/rv515 chips Fixes flickering problems during heavy acceleration due to underflow to the display controllers - Fill in minimal support for RS600 v2 - update display priority when bandwidth is updated so the user can change the parameter at runtime and it will take affect on the next modeset. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-03-31drm/radeon/kms: display watermark fixesAlex Deucher1-0/+2
- rs780/880 were using the wrong bandwidth functions - convert r1xx-r4xx to use the same pm sclk/mclk structs as r5xx+ - move bandwidth setup to a common function Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-03-31drm/radeon/kms: expose thermal/fan i2c busesAlex Deucher1-0/+2
Look up i2c bus in the power table and expose it. You'll need to load a hwmon driver for any chips on the bus, this patch just exposes the bus. Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
2010-03-15drm/radeon: collect r100 asic related declarations in radeon_asic.hDaniel Vetter1-47/+0
This just an example to show what radeon_asic.h might be good for. Before Jerome kills it ;) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-03-15drm/radeon: unconfuse return value of radeon_asic->clear_surface_regDaniel Vetter1-1/+1
No one cares about it, so set it to void. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>