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587be7a173
radeon_driver_load_kms() calls pm_runtime_use_autosuspend() for PX devices, but radeon_driver_unload_kms() does not call the matching pm_runtime_dont_use_autosuspend() during teardown. If the autosuspend delay is set to a negative value while autosuspend is enabled, the runtime PM core increments usage_count to prevent runtime suspend. Without calling pm_runtime_dont_use_autosuspend() during teardown, this reference is not dropped. The documentation for pm_runtime_use_autosuspend() also notes that it is important to undo it with pm_runtime_dont_use_autosuspend() at driver exit time, unless runtime PM was initially enabled with devm_pm_runtime_enable(). Add the missing pm_runtime_dont_use_autosuspend() call to the driver unload path. This issue was found by manual code inspection. Fixes:10ebc0bc09("drm/radeon: add runtime PM support (v2)") Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit0fdc1ff82e) Cc: stable@vger.kernel.org