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| author | Guangshuo Li <lgs201920130244@gmail.com> | 2026-08-08 21:59:42 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-08-12 10:21:23 -0400 |
| commit | 587be7a17358ef8c0106775fcedae5a7bef50735 (patch) | |
| tree | 24005b293e0012a9d17a86cf782a8ce038fc390c /drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | |
| parent | 47cd31185090bd1439d4587b835ac22d7ba6f1e3 (diff) | |
drm/radeon: fix autosuspend cleanup during teardown
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: 10ebc0bc0934 ("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 commit 0fdc1ff82ea14844c22795e9e0813c3ca03235e1)
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
0 files changed, 0 insertions, 0 deletions