| Message ID | 1506440468-5081-3-git-send-email-aastha.gupta4104@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/staging/iio/adc/ad7192.c b/drivers/staging/iio/adc/ad7192.c index 096d29d..609a649 100644 --- a/drivers/staging/iio/adc/ad7192.c +++ b/drivers/staging/iio/adc/ad7192.c @@ -511,6 +511,7 @@ static int ad7192_write_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_SCALE: ret = -EINVAL; + mutex_lock(&st->lock); for (i = 0; i < ARRAY_SIZE(st->scale_avail); i++) if (val2 == st->scale_avail[i][1]) { ret = 0; @@ -524,6 +525,7 @@ static int ad7192_write_raw(struct iio_dev *indio_dev, ad7192_calibrate_all(st); break; } + mutex_unlock(&st->lock); break; case IIO_CHAN_INFO_SAMP_FREQ: if (!val) {
The IIO subsystem is redefining iio_dev->mlock to be used by the IIO core only for protecting device operating mode changes. ie. Changes between INDIO_DIRECT_MODE, INDIO_BUFFER_* modes. In this driver, private driver lock is being used to protect hardware state changes as here state variables are being changed. Signed-off-by: Aastha Gupta <aastha.gupta4104@gmail.com> --- drivers/staging/iio/adc/ad7192.c | 2 ++ 1 file changed, 2 insertions(+)