linux-kernel - [PATCH AUTOSEL 6.1 05/24] power: supply: axp288_fuel

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Date:   Fri, 31 Mar 2023 21:42:21 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Denis Arefev <arefev@...mel.ru>,
        Hans de Goede <hdegoede@...hat.com>,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        Sasha Levin <sashal@...nel.org>, sre@...nel.org, wens@...e.org,
        linux-pm@...r.kernel.org
Subject: [PATCH AUTOSEL 6.1 05/24] power: supply: axp288_fuel_gauge: Added check for negative values

From: Denis Arefev <arefev@...mel.ru>

[ Upstream commit bf6c880d5d1448489ebf92e2d13d5713ff644930 ]

Variable 'pirq', which may receive negative value
in platform_get_irq().
Used as an index in a function regmap_irq_get_virq().

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Denis Arefev <arefev@...mel.ru>
Reviewed-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/power/supply/axp288_fuel_gauge.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/power/supply/axp288_fuel_gauge.c b/drivers/power/supply/axp288_fuel_gauge.c
index 8e6f8a6550790..05f4131784629 100644
--- a/drivers/power/supply/axp288_fuel_gauge.c
+++ b/drivers/power/supply/axp288_fuel_gauge.c
@@ -724,6 +724,8 @@ static int axp288_fuel_gauge_probe(struct platform_device *pdev)
 
 	for (i = 0; i < AXP288_FG_INTR_NUM; i++) {
 		pirq = platform_get_irq(pdev, i);
+		if (pirq < 0)
+			continue;
 		ret = regmap_irq_get_virq(axp20x->regmap_irqc, pirq);
 		if (ret < 0)
 			return dev_err_probe(dev, ret, "getting vIRQ %d\n", pirq);
-- 
2.39.2