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 EEC39548545 for ; Wed, 9 Sep 2026 11:40:50 +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=1788954052; cv=none; b=XJ41kVRFJIjRqxZk4Z5QyJl9yXEXYjiegwJPRXA8vTR8cPipNvQpAjn3L3DM2yjjbBn9l5EnTfR/nCKb5WiS4v7w8/2h/2/SwdkHmISBTWS0SXBqiXehZYO0fvxQjw+oP4bK7+IqlV0fmhJLFBOTGTgTwfWMGc/Y2ssekikWZng= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788954052; c=relaxed/simple; bh=1Wwlk+tOQIxQMV4ySFPo3C7mmr6k4t4ieJTv3Z3VV9A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=KUBhP1RmjOpqzce3TeaWxVsxS54O1FFMspXs0nbSqh8WSnGE+4Y089KmJe0kpBAuHLy1lsP5aQUKalGzEaUTctWZRCyeLufnm1yMJNXCoRcrpGiaKhgaAui/ZbiuWjl2cVmhfTlFPkPZNsGbXFL8pMTi4LvwHXv39gix1WDFn4I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=O71837p8; 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="O71837p8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 29EDD1F00A3A; Wed, 9 Sep 2026 11:40:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1788954050; bh=8cit1UD/vZs5QuCYD/CIvsNpwWnKMOzLsHOR13yK6CM=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=O71837p8oLMo/Q951E0fffLTANL3YQ8eNGFTH+0955CLvW4wXfo6z+K1KtC6Ba0LV 8EiMBXpz9F73yLMIwWklnvvkLo5+Y1SJKgaMNQlEBZyIe5FHAhtrbe82o5Bu+DA7Uu 3dgx2MnoCB32DGAXEUpv8cBQyWi4ql2BNcBFwO9DjVv1+zgeHk18qOr3UT3sAsksXr RyxVewJdWEd0c4FGhP8Hx3W6rBCZQJnsW+fw7Q76R3/IgHqIH/0w/D6vrfSNrItFtj gVIY3kOIxQoO6emz7gyCi9BMTAU//a0KqVzS9ODnVhKpPhsOZRImSso2MLSaUmxy9B Q8LMAlxikKMzQ== From: Sasha Levin To: stable@vger.kernel.org Cc: Ivan Abramov , Sebastian Reichel , Sasha Levin Subject: [PATCH 5.15.y 1/2] power: supply: max17040: Check iio_read_channel_processed() return code Date: Wed, 9 Sep 2026 07:40:47 -0400 Message-ID: <20260909114048.1917822-1-sashal@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <2026090315-stimulate-nanny-a782@gregkh> References: <2026090315-stimulate-nanny-a782@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 a9aef1e8b186e..13e82a1ab2aee 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