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authorDan Carpenter <error27@gmail.com>2010-11-11 14:05:13 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-11-12 07:55:31 -0800
commitaec04288904a7308f2900926902040e7a69ae2be (patch)
treedc897e5ee40107d92216a930494138a12706eb95 /drivers/misc
parentd2e61b8dc99fdb36e0fd176e25365f69afda4ff9 (diff)
downloadop-kernel-dev-aec04288904a7308f2900926902040e7a69ae2be.zip
op-kernel-dev-aec04288904a7308f2900926902040e7a69ae2be.tar.gz
drivers/misc/bh1770glc.c: error handling in bh1770_power_state_store()
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> Cc: Samu Onkalo <samu.p.onkalo@nokia.com> Cc: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/bh1770glc.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/misc/bh1770glc.c b/drivers/misc/bh1770glc.c
index cee632e6..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;
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