From 099c4cef24a6cb77e2c03e9e66199d460ed4a5a1 Mon Sep 17 00:00:00 2001 From: Aishwarya Pant Date: Sat, 18 Mar 2017 03:13:56 +0530 Subject: [PATCH] staging: iio: accel: adis16201: remove iio_dev mlock In the driver adis16201 read raw does not require an iio_dev->mlock for reads. It can run concurrently as adis_read_reg_16() is protected by a transaction lock. Signed-off-by: Aishwarya Pant Signed-off-by: Jonathan Cameron --- drivers/staging/iio/accel/adis16201.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/staging/iio/accel/adis16201.c b/drivers/staging/iio/accel/adis16201.c index 75652681eaa7..fbc240663621 100644 --- a/drivers/staging/iio/accel/adis16201.c +++ b/drivers/staging/iio/accel/adis16201.c @@ -223,17 +223,13 @@ static int adis16201_read_raw(struct iio_dev *indio_dev, default: return -EINVAL; } - mutex_lock(&indio_dev->mlock); addr = adis16201_addresses[chan->scan_index]; ret = adis_read_reg_16(st, addr, &val16); - if (ret) { - mutex_unlock(&indio_dev->mlock); + if (ret) 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; -- 2.20.1