diff mbox

[3.13.y-ckt,26/53] iio: tmp006: Check channel info on write

Message ID 1438893498-17157-27-git-send-email-kamal@canonical.com
State New
Headers show

Commit Message

Kamal Mostafa Aug. 6, 2015, 8:37 p.m. UTC 
3.13.11-ckt25 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Peter Meerwald <pmeerw@pmeerw.net>

commit 8d05abfaeff52bdf66aba3a3a337dcdbdb4911bf upstream.

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>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/iio/temperature/tmp006.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox

Patch

diff --git a/drivers/iio/temperature/tmp006.c b/drivers/iio/temperature/tmp006.c
index 84a0789..7a80509 100644
--- a/drivers/iio/temperature/tmp006.c
+++ b/drivers/iio/temperature/tmp006.c
@@ -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])) {