diff options
| author | Marek Vasut <marex@denx.de> | 2013-07-03 22:25:00 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-09-26 17:18:05 -0700 |
| commit | f7e0ca347bcb540e2894833eccc33f9a65f4c822 (patch) | |
| tree | 84f975e68216a0f2971c75a214b40a647abba269 /drivers/staging/iio | |
| parent | abea758371f89b0cdb5f0b2dad24674e0148f2ee (diff) | |
iio: mxs-lradc: Remove useless check in read_raw
commit 2a961d0995cdadbfba565b28beada59c5ae7ebae upstream.
The removed check in the read_raw implementation was always true,
therefore remove it. This also fixes a bug, by closely inspecting
the code, one can notice the iio_validate_scan_mask_onehot() will
always return 1 and therefore the subsequent condition will always
succeed, therefore making the mxs_lradc_read_raw() function always
return -EINVAL; .
Signed-off-by: Marek Vasut <marex@denx.de>
Tested-by: Otavio Salvador <otavio@ossystems.com.br>
Acked-by: Hector Palacios <hector.palacios@digi.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/iio')
| -rw-r--r-- | drivers/staging/iio/adc/mxs-lradc.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/staging/iio/adc/mxs-lradc.c b/drivers/staging/iio/adc/mxs-lradc.c index 59809566bc4..972a0723afa 100644 --- a/drivers/staging/iio/adc/mxs-lradc.c +++ b/drivers/staging/iio/adc/mxs-lradc.c @@ -234,7 +234,6 @@ static int mxs_lradc_read_raw(struct iio_dev *iio_dev, { struct mxs_lradc *lradc = iio_priv(iio_dev); int ret; - unsigned long mask; if (m != IIO_CHAN_INFO_RAW) return -EINVAL; @@ -243,12 +242,6 @@ static int mxs_lradc_read_raw(struct iio_dev *iio_dev, if (chan->channel > LRADC_MAX_TOTAL_CHANS) return -EINVAL; - /* Validate the channel if it doesn't intersect with reserved chans. */ - bitmap_set(&mask, chan->channel, 1); - ret = iio_validate_scan_mask_onehot(iio_dev, &mask); - if (ret) - return -EINVAL; - /* * See if there is no buffered operation in progess. If there is, simply * bail out. This can be improved to support both buffered and raw IO at |