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2013-09-12drm/msm: fix potential NULL pointer dereferenceWei Yongjun1-1/+2
The dereference to 'pdata' should be moved below the NULL test. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
2013-09-12drm/msm: workaround for missing irqRob Clark1-2/+5
Occasionally we seem to miss an IRQ from the ME (microengine). I'm not entirely sure the root cause, but for now we can unwedge things by retiring from the hangcheck timer. Signed-off-by: Rob Clark <robdclark@gmail.com>
2013-09-12drm/msm: return -EBUSY if bo still activeRob Clark3-18/+44
When we CPU_PREP a bo with NOSYNC flag (for example, to implement PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE), an -EBUSY return indicates to userspace that the bo is still busy. Previously it was incorrectly returning 0 in this case. And while we're in there throw in an bit of extra sanity checking in case userspace tries to wait for a bogus fence. Signed-off-by: Rob Clark <robdclark@gmail.com>
2013-09-12drm/msm: fix return value check in ERR_PTR()Wei Yongjun1-2/+2
In case of error, the function drm_prime_pages_to_sg() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
2013-09-10drm/msm: fix cmdstream size checkRob Clark1-11/+13
Need to check size+offset against bo size (duh!).. now we have a test case to make sure I've done it right: https://github.com/freedreno/msmtest/blob/master/submittest.c Also, use DRM_ERROR() for error case traces, which makes debugging userspace easier when enabling debug traces is too much. Signed-off-by: Rob Clark <robdclark@gmail.com>
2013-09-10drm/msm: hangcheck harderRob Clark2-2/+17
If gpu locks up with the rptr shortly beyond the wrap-around point in the ringbuffer, because the rptr was not reset (but wptr is, by virtue of resetting rb->cur), we could end up in a scenario where we think there is not enough space in the ringbuffer for the next cmds. And since the CP won't reset rptr until after processing an IB, this leaves things in a sort of deadlock. So reset rptr too. And a bit more spiffing up of hangcheck to make things easier to debug. Signed-off-by: Rob Clark <robdclark@gmail.com>
2013-09-10drm/msm: handle read vs write fencesRob Clark4-11/+27
The userspace API already had everything needed to handle read vs write synchronization. This patch actually bothers to hook it up properly, so that we don't need to (for example) stall on userspace read access to a buffer that gpu is also still reading. Signed-off-by: Rob Clark <robdclark@gmail.com>
2013-09-05Merge branch 'exynos-drm-next' of ↵Dave Airlie26-399/+357
git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next Summary: - Consider fallback option to gem allocation fail . try to allocate physically non-contiguous memory if iommu is supported when physically contiguous memory allocation failed. - Add runtime pm support to g2d driver - Add device tree support . add device tree support to rotator driver, make fimd driver get signal polarities from device tree. - some fixups . correct pixel format setting to fimd driver, and consider pixel format checking to a particular window layer. - some cleanups . replace fb_videomode with videomode. . remove non-DT support * 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos: (21 commits) drm/exynos: Fix build error with exynos_drm_connector.c drm/exynos: Remove non-DT support in exynos_drm_fimd drm/exynos: Remove non-DT support in exynos_hdmi drm/exynos: Remove non-DT support in exynos_drm_g2d drm/exynos: Remove non-DT support in exynos_hdmiphy drm/exynos: Remove non-DT support in exynos_ddc drm/exynos: Make Exynos DRM drivers depend on OF drm/exynos: Consider fallback option to allocation fail drm/exynos: fimd: move platform data parsing to separate function drm/exynos: fimd: get signal polarities from device tree drm/exynos: fimd: replace struct fb_videomode with videomode drm/exynos: check a pixel format to a particular window layer drm/exynos: fix fimd pixel format setting drm/exynos: Add NULL pointer check drm/exynos: Remove redundant error messages drm/exynos: Add missing of.h header include drm/exynos: Remove redundant NULL check in exynos_drm_buf drm/exynos: add device tree support for rotator drm/exynos: Add missing includes drm/exynos: add runtime pm interfaces to g2d driver ...
2013-09-05drm/exynos: Fix build error with exynos_drm_connector.cSachin Kamat1-1/+1
exynos_drm_connector.c now uses videomode helper API. Hence select VIDEOMODE_HELPERS at DRM_EXYNOS level itself instead of at DRM_EXYNOS_FIMD to avoid the following compilation error when FIMD is not selected (introduced by commit cf796235a6 "drm/exynos: fimd: replace struct fb_videomode with videomode"): drivers/built-in.o: In function `exynos_drm_connector_get_modes': drivers/gpu/drm/exynos/exynos_drm_connector.c:86: undefined reference to `drm_display_mode_from_videomode' Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: Remove non-DT support in exynos_drm_fimdSachin Kamat1-53/+21
Since commit 383ffda2fa ("ARM: EXYNOS: no more support non-DT for EXYNOS SoCs"), Exynos platform is DT only. Hence remove all the conditional macros and make the driver DT only. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: Remove non-DT support in exynos_hdmiSachin Kamat1-58/+12
Since commit 383ffda2fa ("ARM: EXYNOS: no more support non-DT for EXYNOS SoCs"), Exynos platform is DT only. Hence remove all the conditional macros and make the driver DT only. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: Remove non-DT support in exynos_drm_g2dSachin Kamat1-3/+1
Since commit 383ffda2fa ("ARM: EXYNOS: no more support non-DT for EXYNOS SoCs"), Exynos platform is DT only. Hence remove all the conditional macros and make the driver DT only. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: Remove non-DT support in exynos_hdmiphySachin Kamat1-10/+1
Since commit 383ffda2fa ("ARM: EXYNOS: no more support non-DT for EXYNOS SoCs"), Exynos platform is DT only. Hence remove all the conditional macros and make the driver DT only. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: Remove non-DT support in exynos_ddcSachin Kamat1-10/+1
Since commit 383ffda2fa ("ARM: EXYNOS: no more support non-DT for EXYNOS SoCs"), Exynos platform is DT only. Hence remove all the conditional macros and make the driver DT only. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: Make Exynos DRM drivers depend on OFSachin Kamat1-2/+2
Exynos is a DT-only platform. Add this info to Kconfig. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: Consider fallback option to allocation failVikas Sajjan1-0/+13
To address the case where physically contiguous memory MAY NOT be a mandatory requirement for framebuffer for the application calling exynos_drm_gem_dumb_create, the patch adds a feature to get non physically contiguous memory for framebuffer, if physically contiguous memory allocation fails and if IOMMU is supported. Signed-off-by: Vikas Sajjan <vikas.sajjan@linaro.org> Signed-off-by: Arun Kumar <arun.kk@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: fimd: move platform data parsing to separate functionAndrzej Hajda1-32/+31
The patch moves platfrom_data and device tree parsing to separate function. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: fimd: get signal polarities from device treeAndrzej Hajda1-0/+9
The patch adds code to get signal polarization setting from device tree display-timings node. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: fimd: replace struct fb_videomode with videomodeAndrzej Hajda3-97/+70
The patch replaces all occurrences of struct fb_videomode by more accurate struct videomode. The change allows to remove mode conversion function and simplifies clock divider calculation. Clock configuration is moved to separate function. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: check a pixel format to a particular window layerInki Dae1-0/+11
This patch checks if a requested window supports alpha channel or not. In case of s3c64xx, window 0 doesn't support alpha channel so if the request pixel format is ARGB8888 then change it to XRGB8888. Signed-off-by: Inki Dae <inki.dae@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2013-09-05drm/exynos: fix fimd pixel format settingInki Dae1-21/+13
This patch fixes wrong pixel format setting. A pixel format is decided according to bpp and depth, or user-requested format but fimd driver considered only bpp value to decide a proper pixel format. So this patch makes a proper pixel format to be set according to drm_framebuffer's pixel_format which is set by addfb with bpp and depth, or addfb2 with user-requested format. Signed-off-by: Inki Dae <inki.dae@samsung.com> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2013-09-05drm/exynos: Add NULL pointer checkSachin Kamat1-0/+9
devm_kzalloc can fail. Hence check the pointer to avoid NULL pointer dereferencing. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: Remove redundant error messagesSachin Kamat19-96/+30
kzalloc already has built-in error messages. Hence remove additional ones. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: Add missing of.h header includeSachin Kamat6-1/+6
Add of.h explicitly for of_* APIs. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: Remove redundant NULL check in exynos_drm_bufSachin Kamat1-5/+0
kfree handles null pointers. Hence this check is not necessary. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: add device tree support for rotatorChanho Park2-28/+107
The exynos4 platform is only dt-based since 3.10, we should convert driver data and ids to dt-based parsing methods. The rotator driver has a limit table to get size limit of input picture. Each SoCs has slightly different limit value compared with any others. For example, exynos4210's max_size of RGB888 is 16k x 16k. But, others have 8k x 8k. Another example the exynos5250 should have multiple of 2 pixel size for its X/Y axis. Thus, we should keep different tables for each of them. This patch also includes desciptions of each nodes for the rotator and specifies a example how to bind it. Signed-off-by: Chanho Park <chanho61.park@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: Add missing includesMark Brown10-0/+10
Ensure that all externally accessed functions are correctly prototyped when defined in each file by making sure the headers with the protoypes are included in the file with the definition. Signed-off-by: Mark Brown <broonie@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/exynos: add runtime pm interfaces to g2d driverInki Dae1-12/+28
This patch makes g2d power domain and clock to be controlled through pm runtime interfaces instead of controlling them respectively. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2013-09-05drm/exynos: Add fallback option to get non physically contiguous memory for fbVikas Sajjan1-2/+13
While trying to get boot-logo up on exynos5420 SMDK which has eDP panel connected with resolution 2560x1600, following error occured even with IOMMU enabled: [0.880000] [drm:lowlevel_buffer_allocate] *ERROR* failed to allocate buffer. [0.890000] [drm] Initialized exynos 1.0.0 20110530 on minor 0 To address the cases where physically contiguous memory MAY NOT be a mandatory requirement for fb, the patch adds a feature to get non physically contiguous memory for fb if physically contiguous memory allocation fails and if IOMMU is supported. Signed-off-by: Vikas Sajjan <vikas.sajjan@linaro.org> Signed-off-by: Arun Kumar <arun.kk@samsung.com> Reviewed-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2013-09-05drm/tda998x: BUG() on invalid audio formatDavid Herrmann1-0/+4
Suppress warning of unused-variables by adding a BUG()+return for invalid audio-formats. Cc: Rob Clark <robdclark@gmail.com> Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Dave Airlie <airlied@gmail.com>
2013-09-05drm/radeon: protect ACPI calls with CONFIG_ACPIStephen Rothwell1-0/+4
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Alex Deucher <Alexander.Deucher@amd.com> Signed-off-by: Dave Airlie <airlied@gmail.com>
2013-09-04Merge branch 'drm-nouveau-next' of ↵Dave Airlie37-145/+323
git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next Nothing major ready for merging yet, so mostly bug fixes below, in addition to VP3 enablement from Ilia. * 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6: drm/nouveau: fix command submission to use vmalloc for big allocations drm/nouveau/bios/therm: handle vbioses with duplicate entries (mostly nva5) drm/nouveau: use MSI interrupts drm/nv50-/kms: assume analog display connected if load on any pin drm/nv50/disp: prevent false output detection on the original nv50 drm/nouveau/i2c: pass the function pointers in at creation time drm/nouveau/therm: survive to suspend/resume cycles drm/nouveau/timer: add a way to cancel alarms drm/nouveau/timer: restore the time on resume drm/nouveau/fan: restore pwm value on resume when in manual/auto mode drm/nouveau/therm: Set the correct pwm_mode upon resume drm/nouveau: require contiguous bo for framebuffer drm/nv50-/disp: use the number of dac, sor, pior rather than hardcoded values drm/nouveau: remove duplicate copy of nv44_graph_class drm/nouveau/vdec: implement support for VP3 engines drm/nouveau/core: get rid of math.h, replace log2i with order_base_2
2013-09-04drm/nouveau: fix command submission to use vmalloc for big allocationsMaarten Lankhorst1-7/+20
I was getting a order 4 allocation failure from kmalloc when testing some game after a few days uptime with some suspend/resumes. For big allocations vmalloc should be used instead. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nouveau/bios/therm: handle vbioses with duplicate entries (mostly nva5)Martin Peres1-1/+2
Some vbioses have extra useless entries after "the end" of the table. This is problematic since all of the vbios I found with this issue redefine the pwm freq divider to insane levels (52750 Hz instead of 2500), thus breaking fan management. The first solution to solve this mess would be to change the length of the table. The solution I choose was simply to avoid setting the pwm freq twice as the other redefinitions are harmless with our current parser. Signed-off-by: Martin Peres <martin.peres@labri.fr> Reported-by: Mariusz Bialonczyk <manio@skyboo.net> Tested-by: Mariusz Bialonczyk <manio@skyboo.net> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nouveau: use MSI interruptsLucas Stach3-1/+25
MSIs were only problematic on some old, broken chipsets. But now that we already see systems where PCI legacy interrupts are somewhat flaky, it's really time to move to MSIs. v2 (Ben Skeggs): blacklist BR02 boards Signed-off-by: Lucas Stach <dev@lynxeye.de> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nv50-/kms: assume analog display connected if load on any pinBen Skeggs1-1/+1
Fixes a VGA monitor with a dodgy red (in this case) pin not being detected. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nv50/disp: prevent false output detection on the original nv50Emil Velikov1-5/+10
Commit ea9197cc323839ef3d5280c0453b2c622caa6bc7 effectively enabled the use of an improved DAC detection code, but introduced a regression on the original nv50 chipset, causing a ghost monitor to be detected. v2 (Ben Skeggs): the offending line was likely a thinko, removed it for all chipsets (tested nv50 and nve6 to cover entire range) and added some additional debugging. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=67382 Tested-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com> Cc: <stable@vger.kernel.org> # 3.9+ Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nouveau/i2c: pass the function pointers in at creation timeIlia Mirkin8-21/+23
i2c_bit_add_bus can call the pre_xfer function, which expects the func pointer to be set. Pass in func to the port creation logic so that it is set before i2c_bit_add_bus. See https://bugs.freedesktop.org/show_bug.cgi?id=68456 Reported-by: Hans-Peter Deifel <hpdeifel@gmx.de> Tested-by: Hans-Peter Deifel <hpdeifel@gmx.de> Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nouveau/therm: survive to suspend/resume cyclesMartin Peres4-1/+51
Therm uses 3 ptimer alarms. Two to drive the fan and one for polling the temperature. When suspending/resuming, alarms will never be fired. As we are checking if there isn't an alarm pending before rescheduling another one, we end up never checking temperature or updating the fan speed. This commit also adds debug messages to be able to spot more easily if this case happens again in the future. Sorry for the spam if you activate the debug level though. Tested-by: Dash Four <mr.dash.four@googlemail.com> v2: - fix temperature polling too Signed-off-by: Martin Peres <martin.peres@labri.fr> Tested-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nouveau/timer: add a way to cancel alarmsMartin Peres3-0/+29
Since alarms don't play well with suspend, it is important every alarm user cancels his tasks before suspending. The task should be rescheduled on resume. Signed-off-by: Martin Peres <martin.peres@labri.fr> Tested-by: Martin Peres <martin.peres@labri.fr> Tested-by: Dash Four <mr.dash.four@googlemail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nouveau/timer: restore the time on resumeMartin Peres1-1/+14
This can be useful if some parts of Nouveau try to calculate the time between two events. Without this patch, the time difference would be negative in the case where the computer is suspended/resumed between two events. This patch should fix fan speed probing when done while suspending/resuming. Solve this by saving the current time before suspending and by restoring it on resume. Signed-off-by: Martin Peres <martin.peres@labri.fr> Tested-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nouveau/fan: restore pwm value on resume when in manual/auto modeMartin Peres2-1/+9
If the fan was in manual or auto mode, we should restore the fan speed that was previously set when resuming. The initial pwm value is saved when loading the module. Signed-off-by: Martin Peres <martin.peres@labri.fr> Tested-by: Martin Peres <martin.peres@labri.fr> Tested-by: Dash Four <mr.dash.four@googlemail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nouveau/therm: Set the correct pwm_mode upon resumeEmil Velikov1-1/+1
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com> Signed-off-by: Martin Peres <martin.peres@labri.fr> Tested-by: Martin Peres <martin.peres@labri.fr> Tested-by: Dash Four <mr.dash.four@googlemail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nouveau: require contiguous bo for framebufferMaarten Lankhorst1-0/+5
This was already required before, but no check in the kernel was done to enforce it. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nv50-/disp: use the number of dac, sor, pior rather than hardcoded valuesEmil Velikov1-17/+17
The values are already stored on chipset specific basis in the ctor. Make the most of them and simplify the code further by using a temporary variable to avoid code duplication. Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nouveau: remove duplicate copy of nv44_graph_classIlia Mirkin2-8/+5
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nouveau/vdec: implement support for VP3 enginesIlia Mirkin6-53/+104
For NV98+, BSP/VP/PPP are all FUC-based engines. Hook them all up in the same way as NVC0, but with a couple of different values. Also make sure that the PPP engine is handled in the fifo/mc/vm. Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04drm/nouveau/core: get rid of math.h, replace log2i with order_base_2Ilia Mirkin7-27/+7
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-09-04Merge tag 'drm/for-3.12-rc1' of git://anongit.freedesktop.org/tegra/linux ↵Dave Airlie5-17/+23
into drm-next drm/tegra: Changes for v3.12-rc1 Only a couple of small patches this time around. These are mostly fixes for minor bugs that showed up, but there is also some preparatory work that will come in handy for future patches. * tag 'drm/for-3.12-rc1' of git://anongit.freedesktop.org/tegra/linux: drm/tegra: Parse device tree earlier gpu: host1x: Sort drivers by probe order gpu: host1x: Check for valid host1x pointer gpu: host1x: returning success instead of -ENOMEM gpu: host1x: fix an integer overflow check drm/tegra: hdmi: Make sure clock is enabled before dumping registers
2013-09-03drm/tegra: Parse device tree earlierThierry Reding1-7/+7
Parsing the device tree may cause probing to be deferred. Doing this as early as possible prevents any other resources from being requested and enabled, therefore reducing the need to cleanup on deferred probe while at the same time not wasting precious CPU cycles determining if probing needs to be deferred or not. Signed-off-by: Thierry Reding <treding@nvidia.com>
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