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| author | Lars-Peter Clausen <lars@metafoo.de> | 2011-10-19 15:51:28 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-10-19 20:57:05 (GMT) |
| commit | cd8eca6f77108617a8c47a800533f1b78a357a79 (patch) | |
| tree | a75244bd5b24513bdbb04a8c5c7d2cd79aac8771 | |
| parent | 75bb23a2150e385230d1db52065641ca7cef63d3 (diff) | |
| download | linux-fsl-qoriq-cd8eca6f77108617a8c47a800533f1b78a357a79.tar.xz | |
staging:iio:dac:ad5686: Check for negative values
Currently it is possible to write negative values to the ad5686's raw attribute.
This will cause undefined behaviour, so reject negative values.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/staging/iio/dac/ad5686.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/iio/dac/ad5686.c b/drivers/staging/iio/dac/ad5686.c index 1d50dd1..48389e1 100644 --- a/drivers/staging/iio/dac/ad5686.c +++ b/drivers/staging/iio/dac/ad5686.c @@ -327,7 +327,7 @@ static int ad5686_write_raw(struct iio_dev *indio_dev, switch (mask) { case 0: - if (val > (1 << chan->scan_type.realbits)) + if (val > (1 << chan->scan_type.realbits) || val < 0) return -EINVAL; mutex_lock(&indio_dev->mlock); |