From: Sergey Shtylyov <s.shtylyov@omp.ru>
Date: Sun, 4 Jul 2021 14:38:45 +0000 (+0300)
Subject: i2c: mt65xx: fix IRQ check
X-Git-Tag: v4.19.207~200
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=d009f519e56c9293056148fa596d33878eb21a75;p=users%2Fdwmw2%2Flinux.git

i2c: mt65xx: fix IRQ check

[ 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>
---

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);