From nobody Tue Dec 2 00:46:06 2025 Received: from cstnet.cn (smtp21.cstnet.cn [159.226.251.21]) (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 5EF2219F40A; Sun, 23 Nov 2025 16:36:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.21 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763915808; cv=none; b=TY/1K0ZY3PumaFYUnQECWZsMaix9Z3cKkAzXkBHTedbsHmdHDsdijmme06n0IQkRGheQJss+dTTLy+Ps9y0dzFqmUvF0j8mV9RgkVU8o0giW50gnhxGlz6e1y9WzxgMMAjUV/OY9hNV5hdiLkFl7p+TDn2qShaocLabyvxWayaY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763915808; c=relaxed/simple; bh=1aYOmqLY5WbYru/QZtknmPgHrkepvOw3uUwg5XIonKI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=pead9SRQuAUJYzY72bw/nFjTJX1KK9jG3jnReZwaa6cqr1ABdPDnbQ/OPmwlNjPTsBBqsRam9uVRfwIAArJoO9a9YQxrzdBzbgvFC80bMhg6PPDM+BCCFtRlqp9ci2C95v4q+zVpmXVsotPhJPBJ8I7UyBkzv+7G6La01JMCWpc= 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=159.226.251.21 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 DESKTOP-L0HPE2S (unknown [114.245.38.183]) by APP-01 (Coremail) with SMTP id qwCowAAXq8oQOCNprkXGAQ--.31957S2; Mon, 24 Nov 2025 00:36:32 +0800 (CST) From: Haotian Zhang To: miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com Cc: linux-mtd@lists.infradead.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Haotian Zhang Subject: [PATCH] mtd: rawnand: renesas: Handle devm_pm_runtime_enable() errors Date: Mon, 24 Nov 2025 00:35:51 +0800 Message-ID: <20251123163551.1781-1-vulab@iscas.ac.cn> X-Mailer: git-send-email 2.50.1.windows.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: qwCowAAXq8oQOCNprkXGAQ--.31957S2 X-Coremail-Antispam: 1UD129KBjvJXoW7GF45CryUWF4DZr4kJF4kXrb_yoW8JryrpF 48Xay3CFy0kw48CanF9a1kZFy3Ca4xKrW8Jryv9a4kZ34fXw12k345tFy2vF18KFWqgF1Y qanrJan5AF1qyF7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUkG14x267AKxVW8JVW5JwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02 1l84ACjcxK6xIIjxv20xvE14v26r1I6r4UM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4j 6F4UM28EF7xvwVC2z280aVAFwI0_Gr0_Cr1l84ACjcxK6I8E87Iv6xkF7I0E14v26r4j6r 4UJwAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0 I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r 4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwCY1x0262kKe7AKxVWU AVWUtwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14 v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_JF0_Jw1lIxkG c2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI 0_Jr0_Gr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4U MIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUBVbkUUU UU= X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiBwoPA2kjIsAaSwABs5 Content-Type: text/plain; charset="utf-8" devm_pm_runtime_enable() can fail due to memory allocation failures. The current code ignores its return value and proceeds with pm_runtime_resume_and_get(), which may operate on incorrectly initialized runtime PM state. Check the return value of devm_pm_runtime_enable() and return the error code if it fails. Fixes: 6a2277a0ebe7 ("mtd: rawnand: renesas: Use runtime PM instead of the = raw clock API") Signed-off-by: Haotian Zhang Reviewed-by: Geert Uytterhoeven --- drivers/mtd/nand/raw/renesas-nand-controller.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/nand/raw/renesas-nand-controller.c b/drivers/mtd/n= and/raw/renesas-nand-controller.c index ac8c1b80d7be..c97fa3e62837 100644 --- a/drivers/mtd/nand/raw/renesas-nand-controller.c +++ b/drivers/mtd/nand/raw/renesas-nand-controller.c @@ -1336,7 +1336,9 @@ static int rnandc_probe(struct platform_device *pdev) if (IS_ERR(rnandc->regs)) return PTR_ERR(rnandc->regs); =20 - devm_pm_runtime_enable(&pdev->dev); + ret =3D devm_pm_runtime_enable(&pdev->dev); + if (ret) + return ret; ret =3D pm_runtime_resume_and_get(&pdev->dev); if (ret < 0) return ret; --=20 2.50.1.windows.1