Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.17 494/772] mfd: ipaq-micro: Fix error check return value of platform_get_irq() | Date | Tue, 7 Jun 2022 19:01:26 +0200 |
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From: Lv Ruyi <lv.ruyi@zte.com.cn>
[ Upstream commit 3b49ae380ce1a3054e0c505dd9a356b82a5b48e8 ]
platform_get_irq() return negative value on failure, so null check of irq is incorrect. Fix it by comparing whether it is less than zero.
Fixes: dcc21cc09e3c ("mfd: Add driver for Atmel Microcontroller on iPaq h3xxx") Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20220412085305.2533030-1-lv.ruyi@zte.com.cn Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/mfd/ipaq-micro.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mfd/ipaq-micro.c b/drivers/mfd/ipaq-micro.c index e92eeeb67a98..4cd5ecc72211 100644 --- a/drivers/mfd/ipaq-micro.c +++ b/drivers/mfd/ipaq-micro.c @@ -403,7 +403,7 @@ static int __init micro_probe(struct platform_device *pdev) micro_reset_comm(micro); irq = platform_get_irq(pdev, 0); - if (!irq) + if (irq < 0) return -EINVAL; ret = devm_request_irq(&pdev->dev, irq, micro_serial_isr, IRQF_SHARED, "ipaq-micro", -- 2.35.1
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