On 15/03/17 17:00, Narcisa Ana Maria Vasile wrote:
> 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@xxxxxxxxx>
Applied to the togreg branch of iio.git and pushed out as testing. Thanks,
Jonathan
> ---
> drivers/staging/iio/accel/adis16209.c | 4 ----
> 1 file changed, 4 deletions(-)
>
> diff --git a/drivers/staging/iio/accel/adis16209.c b/drivers/staging/iio/accel/adis16209.c
> index 8ff537f..f8c1fb0 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>
> @@ -252,17 +251,14 @@ 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;
>
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