lkml.org 
[lkml]   [2012]   [Nov]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Subject[PATCH] pinctrl: plgpio: Call clk_disable_unprepare only if clk_prepare_enable is called
From
Date
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@ingics.com>
---
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




\
 
 \ /
  Last update: 2012-11-14 10:21    [W:0.045 / U:1.820 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site