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From: Zou Wei <zou_wei@huawei.com>
To: <linus.walleij@linaro.org>, <radim.pavlik@tbs-biometrics.com>
Cc: <linux-gpio@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	Zou Wei <zou_wei@huawei.com>
Subject: [PATCH -next v2] pinctrl: mcp23s08: Fix missing unlock on error in mcp23s08_irq()
Date: Tue, 8 Jun 2021 14:34:08 +0800	[thread overview]
Message-ID: <1623134048-56051-1-git-send-email-zou_wei@huawei.com> (raw)

Add the missing unlock before return from function mcp23s08_irq()
in the error handling case.

v1-->v2:
   remove the "return IRQ_HANDLED" line

Fixes: 897120d41e7a ("pinctrl: mcp23s08: fix race condition in irq handler")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
---
 drivers/pinctrl/pinctrl-mcp23s08.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pinctrl/pinctrl-mcp23s08.c b/drivers/pinctrl/pinctrl-mcp23s08.c
index 799d596..d025957 100644
--- a/drivers/pinctrl/pinctrl-mcp23s08.c
+++ b/drivers/pinctrl/pinctrl-mcp23s08.c
@@ -353,7 +353,7 @@ static irqreturn_t mcp23s08_irq(int irq, void *data)
 
 	if (intf == 0) {
 		/* There is no interrupt pending */
-		return IRQ_HANDLED;
+		goto unlock;
 	}
 
 	if (mcp_read(mcp, MCP_INTCAP, &intcap))
-- 
2.6.2


             reply	other threads:[~2021-06-08  6:16 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-08  6:34 Zou Wei [this message]
2021-06-09 11:13 ` [PATCH -next v2] pinctrl: mcp23s08: Fix missing unlock on error in mcp23s08_irq() Linus Walleij

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