From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 28D2B30FF34; Mon, 13 Oct 2025 15:06:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760367978; cv=none; b=taEVHSPxM9lUEsLQMyDz9DiE1vFz9O8bTaTsNtgpAY3B5wWwVWS/Yw8oKaX2zwsoCiIZIUCf/465ENBYGG3BM7g2e30BklyqQB0TeqWYkBmDAPpVvwEkzurXwzF0qc9pd+v9HEiuI9BwGhfFWAeKpOqdnC1zPsvXFq/w+77GtB8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760367978; c=relaxed/simple; bh=Xg/V4XGWSZPZQPB4HNqA28Fzg4Fb1+lAesxqCfnAQRU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AwKTC1j3vRQu/BdUFGTamBr46yQEiVFNkDepAHAEWOE2X4K3gBohFzzyL3rFPaW8FmJYTJ89WDYvnmi61PB3Iu1c7j43bKzriA81YAEjeb8V6bmdzPEZGGYyOFRxX+bcfVl+WY6u8srl4MKTmOqUrFEJ74eqyPdzNprvGRNDZgM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=0fKDq6tQ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="0fKDq6tQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB068C4CEFE; Mon, 13 Oct 2025 15:06:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1760367978; bh=Xg/V4XGWSZPZQPB4HNqA28Fzg4Fb1+lAesxqCfnAQRU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0fKDq6tQQ1gbN990dhC89aEGk/8/bcwoTaEpb2ASE57ewuyp2Ec5P2N7V++BQGnAv sDHSEtMvS+CxMyZUzefFMt493+Y3tKFEMXOP6DlJntmit4LXQH2Ta0FFcxlKg2WX9L yVf0jrFDF7hlGFfZXVEb/a/vpofGPQ8ys+IYuUss= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Bartosz Golaszewski , Linus Walleij , Lee Jones Subject: [PATCH 6.6 176/196] mfd: vexpress-sysreg: Check the return value of devm_gpiochip_add_data() Date: Mon, 13 Oct 2025 16:46:07 +0200 Message-ID: <20251013144321.675750641@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251013144315.184275491@linuxfoundation.org> References: <20251013144315.184275491@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bartosz Golaszewski commit 1efbee6852f1ff698a9981bd731308dd027189fb upstream. Commit 974cc7b93441 ("mfd: vexpress: Define the device as MFD cells") removed the return value check from the call to gpiochip_add_data() (or rather gpiochip_add() back then and later converted to devres) with no explanation. This function however can still fail, so check the return value and bail-out if it does. Cc: stable@vger.kernel.org Fixes: 974cc7b93441 ("mfd: vexpress: Define the device as MFD cells") Signed-off-by: Bartosz Golaszewski Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/20250811-gpio-mmio-mfd-conv-v1-1-68c5c958cf80@linaro.org Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman --- drivers/mfd/vexpress-sysreg.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/drivers/mfd/vexpress-sysreg.c +++ b/drivers/mfd/vexpress-sysreg.c @@ -90,6 +90,7 @@ static int vexpress_sysreg_probe(struct struct resource *mem; void __iomem *base; struct gpio_chip *mmc_gpio_chip; + int ret; mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!mem) @@ -110,7 +111,10 @@ static int vexpress_sysreg_probe(struct bgpio_init(mmc_gpio_chip, &pdev->dev, 0x4, base + SYS_MCI, NULL, NULL, NULL, NULL, 0); mmc_gpio_chip->ngpio = 2; - devm_gpiochip_add_data(&pdev->dev, mmc_gpio_chip, NULL); + + ret = devm_gpiochip_add_data(&pdev->dev, mmc_gpio_chip, NULL); + if (ret) + return ret; return devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_AUTO, vexpress_sysreg_cells,