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| author | Nuno Sá <nuno.sa@analog.com> | 2022-10-04 15:49:05 +0200 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-11-23 19:43:58 +0000 |
| commit | 3cc36cabc669fffa7f04931e3dd25dc47314ec06 (patch) | |
| tree | ba159e92f9e4d56a20124d1b35afe5ce5d7ccf31 /drivers/iio/gyro | |
| parent | d711a5a7eff4855deb0e2c2663e679dc205e2d9f (diff) | |
| download | linux-3cc36cabc669fffa7f04931e3dd25dc47314ec06.tar.gz linux-3cc36cabc669fffa7f04931e3dd25dc47314ec06.tar.bz2 linux-3cc36cabc669fffa7f04931e3dd25dc47314ec06.zip | |
iio: gyro: itg3200_core: do not use internal iio_dev lock
The iio_device lock is only meant for internal use. Hence define a
device local lock to protect against concurrent accesses.
While at it, properly include "mutex.h" for mutex related APIs.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20221004134909.1692021-13-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/gyro')
| -rw-r--r-- | drivers/iio/gyro/itg3200_core.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/iio/gyro/itg3200_core.c b/drivers/iio/gyro/itg3200_core.c index 421501584587..74ca22468496 100644 --- a/drivers/iio/gyro/itg3200_core.c +++ b/drivers/iio/gyro/itg3200_core.c @@ -18,6 +18,7 @@ #include <linux/slab.h> #include <linux/stat.h> #include <linux/module.h> +#include <linux/mutex.h> #include <linux/delay.h> #include <linux/iio/iio.h> @@ -131,6 +132,7 @@ static int itg3200_write_raw(struct iio_dev *indio_dev, int val2, long mask) { + struct itg3200 *st = iio_priv(indio_dev); int ret; u8 t; @@ -139,11 +141,11 @@ static int itg3200_write_raw(struct iio_dev *indio_dev, if (val == 0 || val2 != 0) return -EINVAL; - mutex_lock(&indio_dev->mlock); + mutex_lock(&st->lock); ret = itg3200_read_reg_8(indio_dev, ITG3200_REG_DLPF, &t); if (ret) { - mutex_unlock(&indio_dev->mlock); + mutex_unlock(&st->lock); return ret; } t = ((t & ITG3200_DLPF_CFG_MASK) ? 1000u : 8000u) / val - 1; @@ -152,7 +154,7 @@ static int itg3200_write_raw(struct iio_dev *indio_dev, ITG3200_REG_SAMPLE_RATE_DIV, t); - mutex_unlock(&indio_dev->mlock); + mutex_unlock(&st->lock); return ret; default: @@ -336,6 +338,8 @@ static int itg3200_probe(struct i2c_client *client, if (ret) goto error_remove_trigger; + mutex_init(&st->lock); + ret = iio_device_register(indio_dev); if (ret) goto error_remove_trigger; |