diff options
| author | Mike Lockwood <lockwood@android.com> | 2011-12-13 01:25:10 +0800 |
|---|---|---|
| committer | Andy Green <andy.green@linaro.org> | 2012-01-09 10:56:36 +0800 |
| commit | e0cb1751226d6e7077d988cb10e510f890a30f84 (patch) | |
| tree | 74a382e9e990f4b9b6f672de40b8a679dc97244e | |
| parent | f19df1de9e2e620e1795bc34fb0d70d78bcd13c7 (diff) | |
Staging: android: timed_gpio: Properly discard invalid timeout values.
The timed output device never previously checked the return value of sscanf,
resulting in an uninitialized int being passed to enable() if input value
was invalid.
Signed-off-by: Mike Lockwood <lockwood@android.com>
| -rw-r--r-- | drivers/staging/android/timed_output.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/staging/android/timed_output.c b/drivers/staging/android/timed_output.c index 62e79180421..f373422308e 100644 --- a/drivers/staging/android/timed_output.c +++ b/drivers/staging/android/timed_output.c @@ -41,7 +41,9 @@ static ssize_t enable_store( struct timed_output_dev *tdev = dev_get_drvdata(dev); int value; - sscanf(buf, "%d", &value); + if (sscanf(buf, "%d", &value) != 1) + return -EINVAL; + tdev->enable(tdev, value); return size; |