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| author | Liu Yuan <tailai.ly@taobao.com> | 2011-05-24 17:11:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-25 08:39:01 -0700 |
| commit | 877947bc25af5964f282dea112d24934050cc7b1 (patch) | |
| tree | a93075a5fe0967e4020857a35a30b727a29c9808 | |
| parent | f06590bd718ed950c98828e30ef93204028f3210 (diff) | |
| download | blackbird-op-linux-877947bc25af5964f282dea112d24934050cc7b1.tar.gz blackbird-op-linux-877947bc25af5964f282dea112d24934050cc7b1.zip | |
drivers/video/backlight/adp5520_bl.c: check strict_strtoul() return value
It should check if strict_strtoul() succeeds.
[akpm@linux-foundation.org: don't override strict_strtoul() return value]
Signed-off-by: Liu Yuan <tailai.ly@taobao.com>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/video/backlight/adp5520_bl.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/video/backlight/adp5520_bl.c b/drivers/video/backlight/adp5520_bl.c index af3119707dbf..d1aee730d7d8 100644 --- a/drivers/video/backlight/adp5520_bl.c +++ b/drivers/video/backlight/adp5520_bl.c @@ -211,8 +211,12 @@ static ssize_t adp5520_bl_daylight_max_store(struct device *dev, const char *buf, size_t count) { struct adp5520_bl *data = dev_get_drvdata(dev); + int ret; + + ret = strict_strtoul(buf, 10, &data->cached_daylight_max); + if (ret < 0) + return ret; - strict_strtoul(buf, 10, &data->cached_daylight_max); return adp5520_store(dev, buf, count, ADP5520_DAYLIGHT_MAX); } static DEVICE_ATTR(daylight_max, 0664, adp5520_bl_daylight_max_show, |
