openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

pwm: lpc32xx: Properly disable the clock on device removal 

A single clock is used for all PWMs meaning the clock's reference count
might be between 0 and N when .remove() is called. Instead of a single
clk_disable() call pwm_disable() on each PWM, to ensure that
clk_disable() is called for each PWM that is still enabled.

Signed-off-by: Alban Bedel <alban.bedel@avionic-design.de>
Acked-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Acked-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
This commit is contained in:
Alban Bedel 2012-11-14 12:58:14 +01:00 committed by Thierry Reding
parent a9a18e0691
commit 54b2a999a1
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/pwm/pwm-lpc32xx.c
View File

@ -136,8 +136,11 @@ static int lpc32xx_pwm_probe(struct platform_device *pdev)
static int __devexit lpc32xx_pwm_remove(struct platform_device *pdev)
{
struct lpc32xx_pwm_chip *lpc32xx = platform_get_drvdata(pdev);
unsigned int i;
for (i = 0; i < lpc32xx->chip.npwm; i++)
pwm_disable(&lpc32xx->chip.pwms[i]);
clk_disable(lpc32xx->clk);
return pwmchip_remove(&lpc32xx->chip);
}