From: Lv Ruyi <lv.ruyi@xxxxxxxxxx>
[ 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@xxxxxxxxxx>
Signed-off-by: Lv Ruyi <lv.ruyi@xxxxxxxxxx>
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220412085305.2533030-1-lv.ruyi@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 df16fd1df68b..b03489268252 100644
--- a/drivers/mfd/ipaq-micro.c
+++ b/drivers/mfd/ipaq-micro.c
@@ -418,7 +418,7 @@ 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
