From 66893ea3757ceb2a95b57ac0fec6632003155f5b Mon Sep 17 00:00:00 2001 From: Gargi Sharma Date: Mon, 20 Mar 2017 14:00:42 +0530 Subject: [PATCH] staging: adis16203: Remove locking on raw reads of IIO_CHAN_INFO_CALIBBIAS adis16203_read_raw does not need lock for IIO_CHAN_INFO_CALIBBIAS since adis_read_reg_16 is already atomic and nothing else needs to be protected. Signed-off-by: Gargi Sharma Signed-off-by: Jonathan Cameron --- drivers/staging/iio/accel/adis16203.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/staging/iio/accel/adis16203.c b/drivers/staging/iio/accel/adis16203.c index b59755aedd8b..faa2869b5431 100644 --- a/drivers/staging/iio/accel/adis16203.c +++ b/drivers/staging/iio/accel/adis16203.c @@ -203,17 +203,14 @@ static int adis16203_read_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; case IIO_CHAN_INFO_CALIBBIAS: bits = 14; - mutex_lock(&indio_dev->mlock); addr = adis16203_addresses[chan->scan_index]; 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; default: return -EINVAL; -- 2.45.2