Replace driver usage of mlock with driver private lock to meet the new
model where usage of iio_dev->mlock is being redefined as protecting
operating mode changes(changes between BUFFER* and DIRECT modes).
Signed-off-by: Himanshi Jain <himshijain.hj@xxxxxxxxx>
---
drivers/staging/iio/meter/ade7753.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/iio/meter/ade7753.c b/drivers/staging/iio/meter/ade7753.c
index ce26abdea..745c5a6 100644
--- a/drivers/staging/iio/meter/ade7753.c
+++ b/drivers/staging/iio/meter/ade7753.c
@@ -81,10 +81,12 @@
* @tx: transmit buffer
* @rx: receive buffer
* @buf_lock: mutex to protect tx and rx
+ * @lock: protect sensor data
**/
struct ade7753_state {
struct spi_device *us;
struct mutex buf_lock;
+ struct mutex lock; /* protect sensor data */
u8 tx[ADE7753_MAX_TX] ____cacheline_aligned;
u8 rx[ADE7753_MAX_RX];
};
@@ -483,7 +485,7 @@ static ssize_t ade7753_write_frequency(struct device *dev,
if (!val)
return -EINVAL;
- mutex_lock(&indio_dev->mlock);
+ mutex_lock(&st->lock);
t = 27900 / val;
if (t > 0)
@@ -504,7 +506,7 @@ static ssize_t ade7753_write_frequency(struct device *dev,
ret = ade7753_spi_write_reg_16(dev, ADE7753_MODE, reg);
out:
- mutex_unlock(&indio_dev->mlock);
+ mutex_unlock(&st->lock);
return ret ? ret : len;
}
@@ -580,6 +582,7 @@ static int ade7753_probe(struct spi_device *spi)
st = iio_priv(indio_dev);
st->us = spi;
mutex_init(&st->buf_lock);
+ mutex_init(&st->lock);
indio_dev->name = spi->dev.driver->name;
indio_dev->dev.parent = &spi->dev;
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-iio" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
