From: Dan Carpenter <error27@gmail.com>
Date: Tue, 24 Jan 2023 15:20:26 +0000 (+0300)
Subject: gpio: mxc: Unlock on error path in mxc_flip_edge()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=37870358616ca7fdb1e90ad1cdd791655ec54414;p=linux.git

gpio: mxc: Unlock on error path in mxc_flip_edge()

We recently added locking to this function but one error path was
over looked.  Drop the lock before returning.

Fixes: e5464277625c ("gpio: mxc: Protect GPIO irqchip RMW with bgpio spinlock")
Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---

diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
index 6f673b2f2a1bf..9d0cec4b82a33 100644
--- a/drivers/gpio/gpio-mxc.c
+++ b/drivers/gpio/gpio-mxc.c
@@ -249,10 +249,11 @@ static void mxc_flip_edge(struct mxc_gpio_port *port, u32 gpio)
 	} else {
 		pr_err("mxc: invalid configuration for GPIO %d: %x\n",
 		       gpio, edge);
-		return;
+		goto unlock;
 	}
 	writel(val | (edge << (bit << 1)), reg);
 
+unlock:
 	raw_spin_unlock_irqrestore(&port->gc.bgpio_lock, flags);
 }