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Signed-off-by: Nuno Sa --- drivers/iio/imu/adis.c | 11 ++++----- drivers/iio/imu/adis_buffer.c | 8 ++----- include/linux/iio/imu/adis.h | 54 +++++++++++-------------------------------- 3 files changed, 19 insertions(+), 54 deletions(-) diff --git a/drivers/iio/imu/adis.c b/drivers/iio/imu/adis.c index 495caf4ce87a..876848b42f69 100644 --- a/drivers/iio/imu/adis.c +++ b/drivers/iio/imu/adis.c @@ -466,17 +466,17 @@ int adis_single_conversion(struct iio_dev *indio_dev, unsigned int uval; int ret; - mutex_lock(&adis->state_lock); + guard(mutex)(&adis->state_lock); ret = __adis_read_reg(adis, chan->address, &uval, chan->scan_type.storagebits / 8); if (ret) - goto err_unlock; + return ret; if (uval & error_mask) { ret = __adis_check_status(adis); if (ret) - goto err_unlock; + return ret; } if (chan->scan_type.sign == 's') @@ -484,10 +484,7 @@ int adis_single_conversion(struct iio_dev *indio_dev, else *val = uval & ((1 << chan->scan_type.realbits) - 1); - ret = IIO_VAL_INT; -err_unlock: - mutex_unlock(&adis->state_lock); - return ret; + return IIO_VAL_INT; } EXPORT_SYMBOL_NS_GPL(adis_single_conversion, IIO_ADISLIB); diff --git a/drivers/iio/imu/adis_buffer.c b/drivers/iio/imu/adis_buffer.c index d1d1e4f512b9..29cd8564cd32 100644 --- a/drivers/iio/imu/adis_buffer.c +++ b/drivers/iio/imu/adis_buffer.c @@ -130,24 +130,20 @@ static int adis_paging_trigger_handler(struct adis *adis) { int ret; - mutex_lock(&adis->state_lock); + guard(mutex)(&adis->state_lock); if (adis->current_page != 0) { adis->tx[0] = ADIS_WRITE_REG(ADIS_REG_PAGE_ID); adis->tx[1] = 0; ret = spi_write(adis->spi, adis->tx, 2); if (ret) { dev_err(&adis->spi->dev, "Failed to change device page: %d\n", ret); - mutex_unlock(&adis->state_lock); return ret; } adis->current_page = 0; } - ret = spi_sync(adis->spi, &adis->msg); - mutex_unlock(&adis->state_lock); - - return ret; + return spi_sync(adis->spi, &adis->msg); } static irqreturn_t adis_trigger_handler(int irq, void *p) diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h index 4bb0a53cf7ea..93dad627378f 100644 --- a/include/linux/iio/imu/adis.h +++ b/include/linux/iio/imu/adis.h @@ -9,6 +9,7 @@ #ifndef __IIO_ADIS_H__ #define __IIO_ADIS_H__ +#include #include #include #include @@ -150,13 +151,8 @@ int __adis_reset(struct adis *adis); */ static inline int adis_reset(struct adis *adis) { - int ret; - - mutex_lock(&adis->state_lock); - ret = __adis_reset(adis); - mutex_unlock(&adis->state_lock); - - return ret; + guard(mutex)(&adis->state_lock); + return __adis_reset(adis); } int __adis_write_reg(struct adis *adis, unsigned int reg, @@ -248,13 +244,8 @@ static inline int __adis_read_reg_32(struct adis *adis, unsigned int reg, static inline int adis_write_reg(struct adis *adis, unsigned int reg, unsigned int val, unsigned int size) { - int ret; - - mutex_lock(&adis->state_lock); - ret = __adis_write_reg(adis, reg, val, size); - mutex_unlock(&adis->state_lock); - - return ret; + guard(mutex)(&adis->state_lock); + return __adis_write_reg(adis, reg, val, size); } /** @@ -267,13 +258,8 @@ static inline int adis_write_reg(struct adis *adis, unsigned int reg, static int adis_read_reg(struct adis *adis, unsigned int reg, unsigned int *val, unsigned int size) { - int ret; - - mutex_lock(&adis->state_lock); - ret = __adis_read_reg(adis, reg, val, size); - mutex_unlock(&adis->state_lock); - - return ret; + guard(mutex)(&adis->state_lock); + return __adis_read_reg(adis, reg, val, size); } /** @@ -365,12 +351,8 @@ int __adis_update_bits_base(struct adis *adis, unsigned int reg, const u32 mask, static inline int adis_update_bits_base(struct adis *adis, unsigned int reg, const u32 mask, const u32 val, u8 size) { - int ret; - - mutex_lock(&adis->state_lock); - ret = __adis_update_bits_base(adis, reg, mask, val, size); - mutex_unlock(&adis->state_lock); - return ret; + guard(mutex)(&adis->state_lock); + return __adis_update_bits_base(adis, reg, mask, val, size); } /** @@ -411,24 +393,14 @@ int __adis_enable_irq(struct adis *adis, bool enable); static inline int adis_enable_irq(struct adis *adis, bool enable) { - int ret; - - mutex_lock(&adis->state_lock); - ret = __adis_enable_irq(adis, enable); - mutex_unlock(&adis->state_lock); - - return ret; + guard(mutex)(&adis->state_lock); + return __adis_enable_irq(adis, enable); } static inline int adis_check_status(struct adis *adis) { - int ret; - - mutex_lock(&adis->state_lock); - ret = __adis_check_status(adis); - mutex_unlock(&adis->state_lock); - - return ret; + guard(mutex)(&adis->state_lock); + return __adis_check_status(adis); } static inline void adis_dev_lock(struct adis *adis)