From nobody Sun Feb 8 22:53:53 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 E161E33E368; Wed, 28 Jan 2026 09:10:44 +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=1769591448; cv=none; b=uY8UHMs6Y8HI2Uc3rNexKSRKHllVzLkEv4VzcYxa3hKCu6DPg0raceIJHdjCrpv7DhlOf/CUeRZlUviHsxd1uFIQhWH6rXqytmM1QPVoRWPej/4dpRv6bO86PhY59oQfGKnyuOCMRWmVD4Dk7zN7R1Tm+h7Qwjz6FYblEzBUhvg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769591448; c=relaxed/simple; bh=8MKhY8HR/ZM2KQUtkTtjTy4OLP39sF+Kad87Ki86s24=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=ZqLlZoxeo/cEJutTUNA5lgxU2x0iq/GGzECRVlGshlixdDLEUjpau9vwdA73Yub49erBCNZVyHwhjWaWysCAXFltSVINuN6XaxEFw3v2BMsgbV7gAmeSgLHqpqXfRQ7/bqoKZB1t45Y6gWWWSVoGHXfCSn6QrR4jsNEk6UPbRBk= 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 localhost (unknown [124.16.138.129]) by APP-03 (Coremail) with SMTP id rQCowAAnSeCK0nlp7T4TBw--.58122S2; Wed, 28 Jan 2026 17:10:34 +0800 (CST) From: Chen Ni To: deller@gmx.de, u.kleine-koenig@baylibre.com, elfring@users.sourceforge.net Cc: linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Chen Ni Subject: [PATCH] fbdev: au1100fb: Add missing check for clk_enable Date: Wed, 28 Jan 2026 17:10:04 +0800 Message-Id: <20260128091004.2747011-1-nichen@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 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: rQCowAAnSeCK0nlp7T4TBw--.58122S2 X-Coremail-Antispam: 1UD129KBjvdXoWrtr48CF47CF13Jw4kWryDJrb_yoWDGrc_ZF WIvrZ3WrW8Zr18KF48Jryjyry5KFsFvrnFgr1vgr93try7Cr1rurWUZr1xua98XwnruFWD JF9F9rW5Cr1fCjkaLaAFLSUrUUUUbb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbs8FF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_ Cr1l84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_GcCE3s 1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0 cI8IcVAFwI0_JrI_JrylYx0Ex4A2jsIE14v26r4j6F4UMcvjeVCFs4IE7xkEbVWUJVW8Jw ACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lc7CjxVAaw2AFwI0_JF0_ Jw1lc2xSY4AK67AK6r4fMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI 8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AK xVWUAVWUtwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI 8IcVCY1x0267AKxVWUJVW8JwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280 aVAFwI0_Gr0_Cr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43 ZEXa7VUjD5r3UUUUU== X-CM-SenderInfo: xqlfxv3q6l2u1dvotugofq/ Content-Type: text/plain; charset="utf-8" Add check for the return value of clk_enable() andreturn the error if it fails in order to catch the error. Signed-off-by: Chen Ni --- drivers/video/fbdev/au1100fb.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/video/fbdev/au1100fb.c b/drivers/video/fbdev/au1100fb.c index 6251a6b07b3a..5e7a8f018b7b 100644 --- a/drivers/video/fbdev/au1100fb.c +++ b/drivers/video/fbdev/au1100fb.c @@ -567,13 +567,16 @@ int au1100fb_drv_suspend(struct platform_device *dev,= pm_message_t state) int au1100fb_drv_resume(struct platform_device *dev) { struct au1100fb_device *fbdev =3D platform_get_drvdata(dev); + int ret; =20 if (!fbdev) return 0; =20 memcpy(fbdev->regs, &fbregs, sizeof(struct au1100fb_regs)); =20 - clk_enable(fbdev->lcdclk); + ret =3D clk_enable(fbdev->lcdclk); + if (ret) + return ret; =20 /* Unblank the LCD */ au1100fb_fb_blank(VESA_NO_BLANKING, &fbdev->info); --=20 2.25.1