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iio: tmp006: Check channel info on write

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only SAMP_FREQ is writable

Will lead to SAMP_FREQ being written by any attempt to write
to the other exported attributes and hence a rather unexpected
result!

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Peter Meerwald 2015-06-21 23:50:21 +02:00 committed by Jonathan Cameron
parent 06b00f99ca
commit f451957daf
1 changed files with 3 additions and 0 deletions
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3
drivers/iio/temperature/tmp006.c
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@ -132,6 +132,9 @@ static int tmp006_write_raw(struct iio_dev *indio_dev,
struct tmp006_data *data = iio_priv(indio_dev);
int i;
if (mask != IIO_CHAN_INFO_SAMP_FREQ)
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(tmp006_freqs); i++)
if ((val == tmp006_freqs[i][0]) &&
(val2 == tmp006_freqs[i][1])) {