diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2016-09-01 11:44:42 +0200 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-09-18 11:29:48 +0100 |
| commit | dc6ac050c7d405cf99f847d5f7b485a7dfa00840 (patch) | |
| tree | 0235f9efb6d0bc6cf40b9148a35a77056734fe82 /drivers/iio | |
| parent | a483ab796960c9080dc9f97f5905d11debad3df9 (diff) | |
| download | linux-dc6ac050c7d405cf99f847d5f7b485a7dfa00840.tar.bz2 | |
iio: accel: kxsd9: Drop the buffer lock
The RX/TX buffers are gone so drop the lock (it should have been
in the transport struct anyway).
Tested-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/accel/kxsd9.c | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c index c065c6e09fa4..dc0bea7cbf4f 100644 --- a/drivers/iio/accel/kxsd9.c +++ b/drivers/iio/accel/kxsd9.c @@ -41,13 +41,10 @@ /** * struct kxsd9_state - device related storage - * @transport: transport for the KXSD9 - * @buf_lock: protect the rx and tx buffers. - * @us: spi device - **/ + * @map: regmap to the device + */ struct kxsd9_state { struct regmap *map; - struct mutex buf_lock; }; #define KXSD9_SCALE_2G "0.011978" @@ -73,7 +70,6 @@ static int kxsd9_write_scale(struct iio_dev *indio_dev, int micro) if (!foundit) return -EINVAL; - mutex_lock(&st->buf_lock); ret = regmap_read(st->map, KXSD9_REG_CTRL_C, &val); @@ -83,7 +79,6 @@ static int kxsd9_write_scale(struct iio_dev *indio_dev, int micro) KXSD9_REG_CTRL_C, (val & ~KXSD9_FS_MASK) | i); error_ret: - mutex_unlock(&st->buf_lock); return ret; } @@ -93,15 +88,11 @@ static int kxsd9_read(struct iio_dev *indio_dev, u8 address) struct kxsd9_state *st = iio_priv(indio_dev); __be16 raw_val; - mutex_lock(&st->buf_lock); ret = regmap_bulk_read(st->map, address, &raw_val, sizeof(raw_val)); if (ret) - goto out_fail_read; + return ret; /* Only 12 bits are valid */ - ret = be16_to_cpu(raw_val) & 0xfff0; -out_fail_read: - mutex_unlock(&st->buf_lock); - return ret; + return be16_to_cpu(raw_val) & 0xfff0; } static IIO_CONST_ATTR(accel_scale_available, @@ -220,7 +211,6 @@ int kxsd9_common_probe(struct device *parent, st = iio_priv(indio_dev); st->map = map; - mutex_init(&st->buf_lock); indio_dev->channels = kxsd9_channels; indio_dev->num_channels = ARRAY_SIZE(kxsd9_channels); indio_dev->name = name; |