[PATCH] pinctrl: plgpio: Call clk_disable_unprepare only ifclk_prepare_enable is called

[Axel Lin]

This driver allows clk_get() failure, and still work without it.
This patch adds !IS_ERR(plgpio->clk) checking in plgpio_request() error path
so we only call clk_disable_unprepare() if clk_prepare_enable() is called.

Signed-off-by: Axel Lin <axel.lin@xxxxxxxxxx>
---
 drivers/pinctrl/spear/pinctrl-plgpio.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/spear/pinctrl-plgpio.c b/drivers/pinctrl/spear/pinctrl-plgpio.c
index 1044ad3..cf6d9c2 100644
--- a/drivers/pinctrl/spear/pinctrl-plgpio.c
+++ b/drivers/pinctrl/spear/pinctrl-plgpio.c
@@ -243,7 +243,8 @@ static int plgpio_request(struct gpio_chip *chip, unsigned offset)
 	return 0;
 
 err1:
-	clk_disable_unprepare(plgpio->clk);
+	if (!IS_ERR(plgpio->clk))
+		clk_disable_unprepare(plgpio->clk);
 err0:
 	pinctrl_free_gpio(gpio);
 	return ret;
-- 
1.7.9.5



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