From: Guangshuo Li Date: Sat, 8 Aug 2026 13:59:42 +0000 (+0800) Subject: drm/radeon: fix autosuspend cleanup during teardown X-Git-Tag: v7.2~13^2~2^2~11 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=587be7a17358ef8c0106775fcedae5a7bef50735;p=thirdparty%2Fkernel%2Flinux.git 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 Signed-off-by: Alex Deucher (cherry picked from commit 0fdc1ff82ea14844c22795e9e0813c3ca03235e1) Cc: stable@vger.kernel.org --- diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c index dc43fd790a9c..4a99c09f4164 100644 --- a/drivers/gpu/drm/radeon/radeon_kms.c +++ b/drivers/gpu/drm/radeon/radeon_kms.c @@ -71,6 +71,7 @@ void radeon_driver_unload_kms(struct drm_device *dev) if (radeon_is_px(dev)) { pm_runtime_get_sync(dev->dev); pm_runtime_forbid(dev->dev); + pm_runtime_dont_use_autosuspend(dev->dev); } radeon_acpi_fini(rdev);