From nobody Fri Sep 25 06:00:34 2026 Received: from cstnet.cn (smtp81.cstnet.cn [159.226.251.81]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4F032447805; Wed, 16 Sep 2026 07:23:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.81 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789543421; cv=none; b=LSD7BDe7jEjT5pKh8U6TgZiXcRfOjVZWbdMwtE+jIh4OoBrfmc9Dn5YsRth76UkyUNova4lSmt5bhz+K3WAZ2pY2gaWs/8W/RI8ehdBY/9ikjvX3t5D4f82LEgLVYPk4wwB7GiUVMHlq1+mdlLTxnAj01DueWaq3/NsHuIYX8mg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789543421; c=relaxed/simple; bh=CYU1jUqcD8f8ydXOmi/N32Vz1fMulUC8n8CJvnF356Q=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=BH6z516nv2+bcIZmbS+N4xU+JNowVVjNSQsunpPtlk2sE3hmSuFLEq8zghh+V4ATtwPKk4ka+BDBkCO2VM+YKgmkux48E97RFXd5PK7KYS+JPVhptdg9kzJrlD+2ufYIql8TgrrMPltXR1NHpeaR+MEP1H1QCvbL1VCeUIXEFzA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn; spf=pass smtp.mailfrom=iscas.ac.cn; arc=none smtp.client-ip=159.226.251.81 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=iscas.ac.cn Received: from dfae2b116770.home.arpa (unknown [36.110.52.2]) by APP-03 (Coremail) with SMTP id rQCowAC3wD7jQ6pqYhTfBw--.23878S2; Wed, 16 Sep 2026 15:23:15 +0800 (CST) From: Wentao Liang To: david@lechnology.com Cc: jm@ti.com, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, wbg@kernel.org, Wentao Liang , stable@vger.kernel.org Subject: [PATCH] counter: ti-eqep: Fix runtime PM imbalance in ti_eqep_probe() Date: Wed, 16 Sep 2026 07:22:47 +0000 Message-Id: <20260916072247.1967830-1-vulab@iscas.ac.cn> X-Mailer: git-send-email 2.34.1 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 X-CM-TRANSID: rQCowAC3wD7jQ6pqYhTfBw--.23878S2 X-Coremail-Antispam: 1UD129KBjvJXoWrZF1fAw1DXrWDXF18Zr1fZwb_yoW8Jr45pF 4vvF98tFyxXrWIkasrAw1kZF9Y9rW2yay8G34kWa48Zw15Ja4Yk3WUJFyaqF10vrZ5uw15 tw1DWFy7AF4Yyr7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUvj14x267AKxVW8JVW5JwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02 1l84ACjcxK6xIIjxv20xvE14v26F1j6w1UM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4U JVWxJr1l84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gc CE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E 2Ix0cI8IcVAFwI0_Jw0_WrylYx0Ex4A2jsIE14v26F4j6r4UJwAm72CE4IkC6x0Yz7v_Jr 0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7MxkF7I0En4kS14v2 6r126r1DMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrV AFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUAVWUtwCI c40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1I6r4UMIIF0xvE2Ix0cI8IcVCY1x0267 AKxVWxJVW8Jr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r4j 6F4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr1j6F4UJbIYCTnIWIevJa73UjIFyTuYvjfUrF ApUUUUU X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiBwQMA2qqQJUOSgAAsd Content-Type: text/plain; charset="utf-8" In ti_eqep_probe(), runtime PM is enabled and acquired via pm_runtime_get_sync(dev). However, if devm_clk_get_enabled() fails, the function returns directly without calling pm_runtime_put_sync() and pm_runtime_disable(), leaving the runtime PM usage count and enable state unbalanced. Add the missing pm_runtime_put_sync() and pm_runtime_disable() calls on the clock error path. Fixes: 0cf81c73e4c6 ("counter: ti-eqep: enable clock at probe") Cc: stable@vger.kernel.org Signed-off-by: Wentao Liang --- drivers/counter/ti-eqep.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/counter/ti-eqep.c b/drivers/counter/ti-eqep.c index d21c157e531a..84fbf500b0f8 100644 --- a/drivers/counter/ti-eqep.c +++ b/drivers/counter/ti-eqep.c @@ -548,8 +548,11 @@ static int ti_eqep_probe(struct platform_device *pdev) pm_runtime_get_sync(dev); =20 clk =3D devm_clk_get_enabled(dev, NULL); - if (IS_ERR(clk)) + if (IS_ERR(clk)) { + pm_runtime_put_sync(dev); + pm_runtime_disable(dev); return dev_err_probe(dev, PTR_ERR(clk), "failed to enable clock\n"); + } =20 err =3D counter_add(counter); if (err < 0) { --=20 2.34.1