diff options
| author | Narcisa Ana Maria Vasile <narcisaanamaria12@gmail.com> | 2017-03-15 19:00:14 +0200 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2017-03-19 11:01:19 +0000 |
| commit | ae81abcb6a490aff04091aed59baf1c290cc657e (patch) | |
| tree | 2953b53b50df85997fc0c2d7105164399456976f /drivers/staging/iio | |
| parent | 91b4b166175066349f01ce67e091355f8f27e4a7 (diff) | |
staging: iio: adis16209: Remove mutex_lock() and mutex_unlock() calls
The function adis16209_read_raw() is safe to be run in parallel.
The call to adis_read_reg_16() is safe since adis_read_reg() uses the
txrx_lock from struct adis to protect simultaneous changes.
Remove mutex.h inclusion since it is no longer needed.
Signed-off-by: Narcisa Ana Maria Vasile <narcisaanamaria12@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/staging/iio')
| -rw-r--r-- | drivers/staging/iio/accel/adis16209.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/staging/iio/accel/adis16209.c b/drivers/staging/iio/accel/adis16209.c index 28705bf4ef90..52fa2e0511be 100644 --- a/drivers/staging/iio/accel/adis16209.c +++ b/drivers/staging/iio/accel/adis16209.c @@ -7,7 +7,6 @@ */ #include <linux/delay.h> -#include <linux/mutex.h> #include <linux/device.h> #include <linux/kernel.h> #include <linux/spi/spi.h> @@ -254,17 +253,14 @@ static int adis16209_read_raw(struct iio_dev *indio_dev, default: return -EINVAL; } - mutex_lock(&indio_dev->mlock); addr = adis16209_addresses[chan->scan_index][0]; ret = adis_read_reg_16(st, addr, &val16); if (ret) { - mutex_unlock(&indio_dev->mlock); return ret; } val16 &= (1 << bits) - 1; val16 = (s16)(val16 << (16 - bits)) >> (16 - bits); *val = val16; - mutex_unlock(&indio_dev->mlock); return IIO_VAL_INT; } return -EINVAL; |