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2017-10-24Merge tag 'drm/tegra/for-4.15-rc1' of ↵Dave Airlie11-184/+211
git://anongit.freedesktop.org/tegra/linux into drm-next drm/tegra: Changes for v4.15-rc1 This contains a bit of cleanup and some minor fixes for the host1x and Tegra DRM drivers. There's also some more preparatory work for Tegra186 support which I'm not quite ready to send upstream because the GPIO driver needed for HDMI support has been stuck for months, and we can't do much without it. Hopefully that driver will land in v4.15, which would mean we could go ahead with Tegra186 display support in v4.16. * tag 'drm/tegra/for-4.15-rc1' of git://anongit.freedesktop.org/tegra/linux: (21 commits) drm/tegra: hdmi: Add cec-notifier support drm/tegra: dc: Perform a complete reset sequence drm/tegra: dc: Make sure to set the module clock rate drm/tegra: dc: Simplify atomic plane helper functions drm/tegra: dc: Move some declarations to dc.h drm/tegra: vic: Use of_device_get_match_data() drm/tegra: sor: Use of_device_get_match_data() drm/tegra: hdmi: Use of_device_get_match_data() drm/tegra: dc: Use of_device_get_match_data() drm/tegra: Use u64_to_user_ptr helper gpu: host1x: Fix incorrect comment for channel_request gpu: host1x: Disassemble more instructions gpu: host1x: Improve debug disassembly formatting gpu: host1x: Enable gather filter gpu: host1x: Enable Tegra186 syncpoint protection gpu: host1x: Call of_dma_configure() after setting bus drm/tegra: Add Tegra186 support for VIC gpu: host1x: Add Tegra186 support dt-bindings: host1x: Add Tegra186 information gpu: host1x: syncpt: Request syncpoints per client ...
2017-10-23drm/i915: Update DRIVER_DATE to 20171023Jani Nikula1-2/+2
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2017-10-23qxl: alloc & use shadow for dumb buffersGerd Hoffmann4-4/+54
This patch changes the way the primary surface is used for dumb framebuffers. Instead of configuring the bo itself as primary surface a shadow bo is created and used instead. Framebuffers can share the shadow bo in case they have the same format and resolution. On atomic plane updates we don't have to update the primary surface in case we pageflip from one framebuffer to another framebuffer which shares the same shadow. This in turn avoids the flicker caused by the primary-destroy + primary-create cycle, which is very annonying when running wayland on qxl. The qxl driver never actually writes to the shadow bo. It sends qxl blit commands which update it though, and the spice server might actually execute them (and thereby write to the shadow) in case the local rendering is kicked for some reason. This happens for example in case qemu is asked to write out a dump of the guest display (screendump monitor command). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Dave Airlie <airlied@redhat.com> Link: http://patchwork.freedesktop.org/patch/msgid/20171019062150.28090-3-kraxel@redhat.com
2017-10-23drm/qxl: replace QXL_INFO with DRM_DEBUG_DRIVERGerd Hoffmann5-47/+17
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Dave Airlie <airlied@redhat.com> Link: http://patchwork.freedesktop.org/patch/msgid/20171019062150.28090-2-kraxel@redhat.com
2017-10-23drm: Add CRTC_GET_SEQUENCE and CRTC_QUEUE_SEQUENCE ioctls [v3]Keith Packard3-0/+176
These provide crtc-id based functions instead of pipe-number, while also offering higher resolution time (ns) and wider frame count (64) as required by the Vulkan API. v2: * Check for DRIVER_MODESET in new crtc-based vblank ioctls Failing to check this will oops the driver. * Ensure vblank interupt is running in crtc_get_sequence ioctl The sequence and timing values are not correct while the interrupt is off, so make sure it's running before asking for them. * Short-circuit get_sequence if the counter is enabled and accurate Steal the idea from the code in wait_vblank to avoid the expense of drm_vblank_get/put * Return active state of crtc in crtc_get_sequence ioctl Might be useful for applications that aren't in charge of modesetting? * Use drm_crtc_vblank_get/put in new crtc-based vblank sequence ioctls Daniel Vetter prefers these over the old drm_vblank_put/get APIs. * Return s64 ns instead of u64 in new sequence event Suggested-by: Daniel Vetter <daniel@ffwll.ch> Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com> v3: * Removed FIRST_PIXEL_OUT_FLAG * Document that the timestamp in the query and event are that of the first pixel leaving the display engine for the display (using the same wording as the Vulkan spec). Suggested-by: Michel Dänzer <michel@daenzer.net> Acked-by: Dave Airlie <airlied@redhat.com> [airlied: left->leaves (Michel)] Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
2017-10-22drm/etnaviv: short-circuit perfmon ioctlsLucas Stach1-0/+6
The feature implementation isn't stable yet. Reject any attempt to use the IOCTLs for now. This keeps most of the code in place, so we can stabilize it in-tree, but keeps userspace from using the feature for now. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2017-10-22Revert "drm/etnaviv: submit supports performance monitor requests"Lucas Stach1-1/+1
The performance monitoring feature isn't stable enough yet, so don't advertise it to userspace yet. Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
2017-10-22drm/amd/powerplay: fix uninitialized variableRex Zhu1-3/+3
refresh_rate was not initialized when program display gap. this patch can fix vce ring test failed when do S3 on Polaris10. bug: https://bugs.freedesktop.org/show_bug.cgi?id=103102 bug: https://bugzilla.kernel.org/show_bug.cgi?id=196615 Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Rex Zhu <Rex.Zhu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2017-10-21drm/amd/display:: Fix NULL pointer in Raven hotplugJerry (Fangzhi) Zuo1-7/+0
Programming sequence to frontend and backend has been switched. In such case, program_scaler() is getting called when programming frontend, and should be removed from backend programming routine. Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Fix memoryleak during S3 resume.Leo (Sunpeng) Li1-4/+0
Do not create dc_state within display_resume, since it's being constructed within atomic check. Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: add hardware_planes_only to list of affected planesShirish S1-6/+24
For SoC's having software designed cursor plane, should be treated differently than hardware cursor planes. The DRM core initializes cursor plane by default with legacy_cursor_update set. Hence legacy_cursor_update can be use effectively to handle software cursor planes' update and atomicity functionalities. This patch uses this variable to decide in the atomic_check to whether add a requested plane to the list of affected planes or not, hence fixing the issue of co-existence of MPO, i.e, setting of available hardware planes like underlay and updation of cursor planes as well. Without this patch when underlay is set from user space, only blank screen with backlight is visible. Signed-off-by: Shirish S <shirish.s@amd.com> Reviewed-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Fix brace styleTom St Denis1-9/+6
Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Acked-by: Andrey Grodzovsky <andey.grodzovsky@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Remove needless cast in amdgpu_dm_connector_init()Tom St Denis1-1/+2
The cast of dc_link is redundant. Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Acked-by: Andrey Grodzovsky <andey.grodzovsky@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Fix brace style in amdgpu_dm_connector_ddc_get_modes()Tom St Denis1-1/+2
Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Acked-by: Andrey Grodzovsky <andey.grodzovsky@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Tidy up dm_drm_plane_reset()Tom St Denis1-3/+3
Move WARN_ON higher up and in doing so fix brace style. Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Acked-by: Andrey Grodzovsky <andey.grodzovsky@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Fix indentation in create_eml_sink()Tom St Denis1-2/+1
Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Acked-by: Andrey Grodzovsky <andey.grodzovsky@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Replace block with strncpy() in fill_audio_info()Tom St Denis1-5/+3
Replace inlined strncpy with library call. Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Acked-by: Andrey Grodzovsky <andey.grodzovsky@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Fix brace style in amdgpu_dm_initialize_drm_device()Tom St Denis1-2/+1
Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Acked-by: Andrey Grodzovsky <andey.grodzovsky@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Simplify handle_hpd_rx_irq()Tom St Denis1-6/+6
There is a local reference to the dc_link that wasn't being used so we shorten references throughout the function. Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Acked-by: Andrey Grodzovsky <andey.grodzovsky@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Fix brace style in dm_handle_hpd_rx_irq()Tom St Denis1-1/+2
Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Acked-by: Andrey Grodzovsky <andey.grodzovsky@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Fix brace style in amdgpu_dm_update_connector_after_detect()Tom St Denis1-2/+2
Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Acked-by: Andrey Grodzovsky <andey.grodzovsky@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Fix indentation in dm_resume()Tom St Denis1-4/+1
Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Acked-by: Andrey Grodzovsky <andey.grodzovsky@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Fix indentation in dm_suspend()Tom St Denis1-4/+1
Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Acked-by: Andrey Grodzovsky <andey.grodzovsky@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Simplify dm_late_init()Tom St Denis1-2/+1
Signed-off-by: Tom St Denis <tom.stdenis@amd.com> Acked-by: Andrey Grodzovsky <andey.grodzovsky@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21amdgpu/dc: inline dml_round_to_multipleDave Airlie3-21/+19
turns out to be a win to inline this. Signed-off-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21amdgpu/dc: drop dml_util_is_420Dave Airlie2-34/+0
This is unused code. Signed-off-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Add bunch of missing license headers in DMLHarry Wentland2-3/+46
All files should have MIT headers. Signed-off-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21amdgpu/dc: inline a bunch of the dml wrappers.Harry Wentland7-80/+110
This reduces the code size. This is basically a redo of Dave's change with the same name on top of the latest DML. Signed-off-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Small comment on dc_commit_planes_to_streamHarry Wentland1-0/+7
Having one struct on the stack was somewhat confusing. Also mention that the whole function should eventually go. Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Minor update to DMLDmytro Laktyushkin6-22/+5
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: change dml numdpp var to uintDmytro Laktyushkin2-8/+8
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: default force_single_disp_pipe_split = 1 on RVTony Cheng1-0/+1
1080p idle, stutter efficiency goes up from 95.8% to 97.8% result in 5mW saving from APU and 8mW saving from DDR4 Signed-off-by: Tony Cheng <tony.cheng@amd.com> Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Remove redundant condition in dml vbaHarry Wentland1-1/+1
Found by 0-day https://lists.freedesktop.org/archives/dri-devel/2017-October/154698.html Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: dal 3.1.07Tony Cheng1-2/+1
- regression fixes in dal 3.1.06 - more linux upstream backport Signed-off-by: Tony Cheng <tony.cheng@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Reduce stack size of commit_planes_to_streamHarry Wentland1-6/+13
This function likes to blow 1024 stack size when something is added to the addr struct. For now just dynamically allocate. Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Fix one more place for dc_stream_state leakHarry Wentland1-1/+1
One more thing that happened due to uneven applying of patches. This mirrors what Darren Salt fixed. Signed-off-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Move OS types to os_types.hHarry Wentland2-45/+40
Some of this stuff is not really dm_services Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: LGD panel willl flash line under windowHersen Wu1-0/+9
Signed-off-by: Hersen Wu <hersenxs.wu@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: DAL 3.1.06Tony Cheng1-1/+2
Raven bug fixes - RS3 MPO stability improvement - SLS fixes - AM4 fixes DAL 3.1 - merge in upstream patches from DRM maintainer Dave Arilie - hubp, dpp HW objects Signed-off-by: Tony Cheng <tony.cheng@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: rename dscl functionsYue Hin Lau3-56/+56
Signed-off-by: Yue Hin Lau <Yuehin.Lau@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: WA for 3 display play video hot plug.Yongqiang Sun5-23/+26
Three monitor connected and playing a video will occupy all 4 pipes, if hot plug forth display, commit streams will be failed due to no free pipe can be found. Work around: When forth monitor connected, mark video plane as a fake plane, remove it in dc, keep it in dm and report address to OS, until OS turn off MPO. Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Add DIGD case when getting retimer settingsAndrew Jiang1-0/+12
One of the HDMI ports map to DIGD, which we did not map to DP3 ext HDMI settings. Add the DIGD case so that we can get proper retimer settings from SBIOS for that port. Signed-off-by: Andrew Jiang <Andrew.Jiang@amd.com> Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Add chip mask to HDMI retimer/redriver checkAndrew Jiang1-3/+5
There were cases where the chip caps held additional bits that led to the retimer/redriver check failing; use the proper mask to ensure that we have only the bits that we care about for the check in question. Signed-off-by: Andrew Jiang <Andrew.Jiang@amd.com> Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Correct timings in build scaling paramsAndrew Jiang1-14/+3
A previous patch set the addressable timing as active + border, when in fact, the VESA standard specifies active as equal to addressable + border. This patch makes the fix more correct and in line with the standard. Signed-off-by: Andrew Jiang <Andrew.Jiang@amd.com> Reviewed-by: Andrew Jiang <Andrew.Jiang@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: check SR_WATERMARK regs prior to writeEric Bernstein1-70/+74
Signed-off-by: Eric Bernstein <eric.bernstein@amd.com> Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: drop display_pipe_clocks.c.Dave Airlie4-145/+1
This code isn't used at all in the kernel tree, perhaps it can wait to be imported when it is. It also does a lot of floating point calcs, so probably good to drop it until it's needed and we can ensure proper fpu accessors. Signed-off-by: Dave Airlie <airlied@redhat.com> Reviewed-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Fix up some whitespace in handle_cursor_updateHarry Wentland1-4/+4
Use combo of tabs and spaces Signed-off-by: Harry Wentland <harry.wentland@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Fix warning about uninitialized variableHarry Wentland1-1/+1
Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: Don't set cursor address is 0 logging as errorsAndrew Jiang1-1/+1
This actually happens quite a bit, and having it as an error causes false positive messages when running tests. Signed-off-by: Andrew Jiang <Andrew.Jiang@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2017-10-21drm/amd/display: fix ifnullfree.cocci warningskbuild test robot1-4/+2
drivers/gpu/drm/amd/amdgpu/../display/dc/gpio/gpio_service.c:134:3-8: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values. drivers/gpu/drm/amd/amdgpu/../display/dc/gpio/gpio_service.c:175:4-9: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values. NULL check before some freeing functions is not needed. Based on checkpatch warning "kfree(NULL) is safe this check is probably not required" and kfreeaddr.cocci by Julia Lawall. Generated by: scripts/coccinelle/free/ifnullfree.cocci Fixes: f09cd1f46388 ("drm/amd/display: Use kernel alloc/free") Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
generated by cgit v1.2.3 (git 2.39.0) at 2025-09-30 07:17:25 +0300