lkml.org 
[lkml]   [2010]   [Oct]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [patch] misc/bh1770glc: error handling in bh1770_power_state_store()
From
Date
On Thu, 2010-10-28 at 06:41 +0200, ext Dan Carpenter wrote:
> There was a signedness bug so "ret" was never less than zero and that
> breaks the error handling. Also in the original code it would overwrite
> ret and the result is still negative but it's bogus number instead of
> the correct error code.
>
> Signed-off-by: Dan Carpenter <error27@gmail.com>

Acked-by: Samu Onkalo <samu.p.onkalo@nokia.com>

>
> diff --git a/drivers/misc/bh1770glc.c b/drivers/misc/bh1770glc.c
> index cee632e..d79a972 100644
> --- a/drivers/misc/bh1770glc.c
> +++ b/drivers/misc/bh1770glc.c
> @@ -649,7 +649,7 @@ static ssize_t bh1770_power_state_store(struct device *dev,
> {
> struct bh1770_chip *chip = dev_get_drvdata(dev);
> unsigned long value;
> - size_t ret;
> + ssize_t ret;
>
> if (strict_strtoul(buf, 0, &value))
> return -EINVAL;
> @@ -659,8 +659,12 @@ static ssize_t bh1770_power_state_store(struct device *dev,
> pm_runtime_get_sync(dev);
>
> ret = bh1770_lux_rate(chip, chip->lux_rate_index);
> - ret |= bh1770_lux_interrupt_control(chip, BH1770_ENABLE);
> + if (ret < 0) {
> + pm_runtime_put(dev);
> + goto leave;
> + }
>
> + ret = bh1770_lux_interrupt_control(chip, BH1770_ENABLE);
> if (ret < 0) {
> pm_runtime_put(dev);
> goto leave;



\
 
 \ /
  Last update: 2010-10-29 13:31    [W:0.057 / U:0.220 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site