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([36.255.223.70]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3925fd95270sm6365730a91.5.2026.08.08.07.49.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 08 Aug 2026 07:49:26 -0700 (PDT) From: Guangshuo Li To: Matthew Brost , =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= , Rodrigo Vivi , David Airlie , Simona Vetter , intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: Guangshuo Li , stable@vger.kernel.org Subject: [PATCH] drm/xe: fix autosuspend cleanup during teardown Date: Sat, 8 Aug 2026 22:49:07 +0800 Message-ID: <20260808144907.2918746-1-lgs201920130244@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" xe_pm_runtime_init() calls pm_runtime_use_autosuspend(), but xe_pm_runtime_fini() 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 runtime PM teardown path. This issue was found by manual code inspection. Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs") Cc: stable@vger.kernel.org Signed-off-by: Guangshuo Li --- drivers/gpu/drm/xe/xe_pm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/xe/xe_pm.c b/drivers/gpu/drm/xe/xe_pm.c index 99562f691080..301789adaa21 100644 --- a/drivers/gpu/drm/xe/xe_pm.c +++ b/drivers/gpu/drm/xe/xe_pm.c @@ -518,6 +518,7 @@ static void xe_pm_runtime_fini(struct xe_device *xe) if (IS_SRIOV_VF(xe)) return; =20 + pm_runtime_dont_use_autosuspend(dev); pm_runtime_get_sync(dev); pm_runtime_forbid(dev); } --=20 2.43.0