From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 B9313533582 for ; Wed, 9 Sep 2026 11:28:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788953306; cv=none; b=HEWYy2mhlnnl869Ckk6Ps6ASGCkYVSaXUakhNBCyecm1r9j5f3nlPEIi8uYiU2P51JZpceRXPRCOAMcNws7dNbL8kxTf/A4pqPvVVhXs78tVMCvCQPym2LZli+8I7d+X8rtZiuoFiOtAMxH1nimdJtAZPzkMmZwqsOYFYZvye+s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788953306; c=relaxed/simple; bh=sZMHv0e49pJRdP60nRckR5SzKPHt04B+l9NjX1BrgTk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IUpZ4293WLAYdP8tQ8xiEU5fga0itR9OOTUw0E9uqUyRVqqXW5ivS2HTab/jgdwvZfKeJd5N4NXuqwCpfjQOuvz+f9ww1cZOlx1Ov3Tf8+yCos69knwTmg1gVQymdBrrzHjBdBMo+sZdumj6tMsA1DYiebClrjeHMXKW7bPspEE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=EUf6sCM0; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="EUf6sCM0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1D6BF1F00A3A; Wed, 9 Sep 2026 11:28:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788953304; bh=aoOFJpYnbMmYnCrVzk2adZZdZBwCN4Akhp3EY6TGDJA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=EUf6sCM0nxvtTOk7DxfjiC9qEqTCIiierCSOftliNUh+fF6CZDlHiox0ZX4ByQlQB zD3KdG1DqmW+wNU9QHqGBYBOcpAE7c5TrIXr+cgagSIA6CjRdJ8QjFGBH+VQ9O/+Ds exS/qkNaT089RER/hO6vswKEOSxp4j5IgdzlNopGo7rx3zUN1dVdYylHmgutYTOh1j DYJManM86ru28/xyvBo/3nWFarjZxRLSEVyNynCsX4KblRd7O0i+yvNNxGgjeuH5dN +Z9WiFPnM7xRK077s8oPQQVEkRBV6BUB0iRgnPvHS0jXl0Rk/3Rtrp1jNZIpCk4hbR 5WGHsq7bKjtIQ== From: Sasha Levin To: stable@vger.kernel.org Cc: Ivan Abramov , Sebastian Reichel , Sasha Levin Subject: [PATCH 6.6.y 1/2] power: supply: max17040: Check iio_read_channel_processed() return code Date: Wed, 9 Sep 2026 07:28:21 -0400 Message-ID: <20260909112822.1848327-1-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <2026090314-oncoming-condition-a40f@gregkh> References: <2026090314-oncoming-condition-a40f@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 [Stable dependency adaptation] Linux 6.6 does not contain the optional IIO temperature support introduced by 814755c48f8b, so omit the temperature-read error-checking hunk and the unavailable status/temperature context. Retain the local ret declaration: target 659cc3d8d5ef uses it to propagate voltage and capacity read errors without adding a declaration of its own. Use ret for the existing -EINVAL default case so this dependency builds without an unused-variable warning before the target is applied. Keep the successful return as zero; the target stores positive readings in ret. This is a prerequisite-only adaptation with unchanged driver behavior and no added functions. Stable-dep-of: 659cc3d8d5ef ("power: supply: max17040: propagate register read errors") Signed-off-by: Sasha Levin --- drivers/power/supply/max17040_battery.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/power/supply/max17040_battery.c b/drivers/power/supply/max17040_battery.c index ff42db6728991..28c66c1fe6e43 100644 --- a/drivers/power/supply/max17040_battery.c +++ b/drivers/power/supply/max17040_battery.c @@ -386,6 +386,7 @@ 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: @@ -401,7 +402,8 @@ static int max17040_get_property(struct power_supply *psy, val->intval = chip->low_soc_alert; break; default: - return -EINVAL; + ret = -EINVAL; + return ret; } return 0; } -- 2.53.0