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([2001:250:5800:1000::f280]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84fb1ee6646sm727306b3a.38.2026.08.12.02.27.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Aug 2026 02:27:48 -0700 (PDT) From: Guangshuo Li To: Ajay Gupta , Andi Shyti , Wolfram Sang , linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Guangshuo Li , stable@vger.kernel.org Subject: [PATCH] i2c: nvidia-gpu: fix autosuspend cleanup Date: Wed, 12 Aug 2026 17:23:22 +0800 Message-ID: <20260812092322.3423217-1-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" gpu_i2c_probe() calls pm_runtime_use_autosuspend(), but the remove path does not call the matching pm_runtime_dont_use_autosuspend(). 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 undoing the autosuspend setting during teardown, this reference is not dropped and usage_count remains unbalanced. Call pm_runtime_dont_use_autosuspend() during driver removal to properly undo the autosuspend setting. This issue was found by manual code inspection. Fixes: d4a4f927e4dd ("i2c: nvidia-gpu: add runtime pm support") Cc: stable@vger.kernel.org Signed-off-by: Guangshuo Li --- drivers/i2c/busses/i2c-nvidia-gpu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/i2c/busses/i2c-nvidia-gpu.c b/drivers/i2c/busses/i2c-n= vidia-gpu.c index 14c059b03945..9dbe1fe22412 100644 --- a/drivers/i2c/busses/i2c-nvidia-gpu.c +++ b/drivers/i2c/busses/i2c-nvidia-gpu.c @@ -334,6 +334,7 @@ static void gpu_i2c_remove(struct pci_dev *pdev) struct gpu_i2c_dev *i2cd =3D pci_get_drvdata(pdev); =20 pm_runtime_get_noresume(i2cd->dev); + pm_runtime_dont_use_autosuspend(i2cd->dev); i2c_del_adapter(&i2cd->adapter); pci_free_irq_vectors(pdev); } --=20 2.43.0