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 6837C355042; Tue, 16 Dec 2025 12:14:32 +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=1765887272; cv=none; b=GErUv4U/2LIkMGwCcVlRy85dF+I1mM/lygv3E9TmUqLIlqSijczP86xt8103ZNMl5L2Q9qym6OiKWBHlxHeE2eQWgHesJTjij867w95i2dPwFjbY5c4eSXQHENf60vc8ZwX6dcYPsgwsd2vrYRz5vHojK1vWXix5l9TjbBLQG/w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765887272; c=relaxed/simple; bh=pZf66ld3wWFYcdrBuenry/F/zj2AM6nzwXL1j7BdzTs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XStcpTZ3/rpOI1258z2uSqhHjYh/zKE39oSMNxrO6DUvNxK+dACK3J0a9p7pcjvWsypmA2evoRyes5aRoGQAHl7nbcAPPSWAS9dgXXG0P5KIYd3I634Mqpi2/OIU+kFf5z4b72XzxVvkJmzPdeF1eu/eaEYdFDi5XW8VxK5qVqY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=bmqRv+4R; 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="bmqRv+4R" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C64E5C4CEF1; Tue, 16 Dec 2025 12:14:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1765887272; bh=pZf66ld3wWFYcdrBuenry/F/zj2AM6nzwXL1j7BdzTs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bmqRv+4RKyXhyGC8KGkj2NMMLsK5ecZAn+Exg9QBe+ft6xwLpdAgGU6uC3KE3L8Kf 3KcowEsOUDhqwpiUxmYAkXR5hSoRfzkOxLECOj8I+2uRWfAz78lb7v3Rs67wXWFhdN aVTMNfVq+sUSWBui5KZ5HrpLKFQD/mTVTl1C74Os= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ivan Abramov , Sebastian Reichel , Sasha Levin Subject: [PATCH 6.18 180/614] power: supply: max17040: Check iio_read_channel_processed() return code Date: Tue, 16 Dec 2025 12:09:07 +0100 Message-ID: <20251216111407.894704650@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251216111401.280873349@linuxfoundation.org> References: <20251216111401.280873349@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 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ivan Abramov [ Upstream commit 2c68ac48c52ad146523f32b01d70009622bf81aa ] Since iio_read_channel_processed() may fail, return its exit code on error. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 814755c48f8b ("power: max17040: get thermal data from adc if available") Signed-off-by: Ivan Abramov Link: https://patch.msgid.link/20251008133648.559286-1-i.abramov@mt-integration.ru Signed-off-by: Sebastian Reichel Signed-off-by: Sasha Levin --- drivers/power/supply/max17040_battery.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c index c1640bc6accd2..48453508688a4 100644 --- a/drivers/power/supply/max17040_battery.c +++ b/drivers/power/supply/max17040_battery.c @@ -388,6 +388,7 @@ static int max17040_get_property(struct power_supply *psy, union power_supply_propval *val) { struct max17040_chip *chip = power_supply_get_drvdata(psy); + int ret; switch (psp) { case POWER_SUPPLY_PROP_ONLINE: @@ -410,7 +411,10 @@ static int max17040_get_property(struct power_supply *psy, if (!chip->channel_temp) return -ENODATA; - iio_read_channel_processed(chip->channel_temp, &val->intval); + ret = iio_read_channel_processed(chip->channel_temp, &val->intval); + if (ret) + return ret; + val->intval /= 100; /* Convert from milli- to deci-degree */ break; -- 2.51.0