From nobody Mon Feb 9 00:02:51 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 871347478; Thu, 29 Jan 2026 04:13:31 +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=1769660015; cv=none; b=OQvnBH1EU+ox+ls51bGKhCFoXBQiSY8L8f36MmvagUiy+dKoAj984mdXaYXYxiEYeKD5aWQDjaSE66mnvO0Aup1OamywceNpV+ezVXL9CqhnAXz96JR2aSh4aN8zRPiWYCkBZRFLvC2mD32H1XoOp2Rxg0Vl/MsgH+l4r6mTwKg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769660015; c=relaxed/simple; bh=bjfbx/Yem/NlWAluEDqTGHZ87x6+gEnW52NtxHuWKqc=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=fJwrhakPI+uJLEwlIDU1E79O6KwEk40aBVU4N33NAibUx6BAVfYnSscrNjRgFxoguKNzw2dYKeYdT/BM/suhdXeyFzKTIJc5wDHF4+kRb6M7Tva6prUwwwWgpAWepWCo4mcOCJUz88vSAwhAon2vrT/BZO/W92emJi3rq1MzJzQ= 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 rQCowABXddxl3npp0LgrBw--.63613S2; Thu, 29 Jan 2026 12:13:25 +0800 (CST) From: Chen Ni To: u.kleine-koenig@baylibre.com Cc: deller@gmx.de, dri-devel@lists.freedesktop.org, elfring@users.sourceforge.net, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, Chen Ni Subject: [PATCH v2] fbdev: au1100fb: Check return value of clk_enable() in .resume() Date: Thu, 29 Jan 2026 12:07:14 +0800 Message-Id: <20260129040714.2772522-1-nichen@iscas.ac.cn> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: 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: rQCowABXddxl3npp0LgrBw--.63613S2 X-Coremail-Antispam: 1UD129KBjvdXoWrZFyDuw1UKFykCw47Xry7ZFb_yoWkCrX_ZF Z7urZ3Wry8Zr1kKF4xJF42yry3KFZFgrnIgrn2grZxtry7Zr18urWUZryI9a98XwnruFWD GF9FgrW7Ar1fCjkaLaAFLSUrUUUU1b8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbaxFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_ Cr1l84ACjcxK6I8E87Iv67AKxVWxJr0_GcWl84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s 0DM2kKe7AKxVWUXVWUAwAS0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAq x4xG6I80ewAv7VC0I7IYx2IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6x CaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwCY 1x0262kKe7AKxVWUtVW8ZwCY02Avz4vE14v_Gryl42xK82IYc2Ij64vIr41l4I8I3I0E4I kC6x0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWU WwC2zVAF1VAY17CE14v26r126r1DMIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr 0_JF4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r1j6r4UMIIF0xvE42xK8VAvwI8IcIk0rVWU JVWUCwCI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r1j6r4UYx BIdaVFxhVjvjDU0xZFpf9x0JUxOz3UUUUU= X-CM-SenderInfo: xqlfxv3q6l2u1dvotugofq/ Content-Type: text/plain; charset="utf-8" Check the return value of clk_enable() in au1100fb_drv_resume() and return the error on failure. This ensures the system is aware of the resume failure and can track its state accurately. Signed-off-by: Chen Ni Acked-by: Uwe Kleine-K=C3=B6nig --- Changes in v2: - Update commit message - Clean up extraneous whitespace in the code --- 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..feaa1061c436 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