From: Sergey Shtylyov s.shtylyov@omp.ru
stable inclusion from linux-4.19.207 commit d009f519e56c9293056148fa596d33878eb21a75
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[ Upstream commit 58fb7c643d346e2364404554f531cfa6a1a3917c ]
Iff platform_get_irq() returns 0, the driver's probe() method will return 0 early (as if the method's call was successful). Let's consider IRQ0 valid for simplicity -- devm_request_irq() can always override that decision...
Fixes: ce38815d39ea ("I2C: mediatek: Add driver for MediaTek I2C controller") Signed-off-by: Sergey Shtylyov s.shtylyov@omprussia.ru Reviewed-by: Qii Wang qii.wang@mediatek.com Signed-off-by: Wolfram Sang wsa@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/i2c/busses/i2c-mt65xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index 2bb4d20ead32b..e09b065a6aff0 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c @@ -804,7 +804,7 @@ static int mtk_i2c_probe(struct platform_device *pdev) return PTR_ERR(i2c->pdmabase);
irq = platform_get_irq(pdev, 0); - if (irq <= 0) + if (irq < 0) return irq;
init_completion(&i2c->msg_complete);