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Subject[PATCH 4.14 092/157] iio: sca3000: Fix an error handling path in sca3000_probe()
Date
4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

commit 4a5b45383ca371e123ba103d34d4b3b87616245c upstream.

Use 'devm_iio_kfifo_allocate()' instead of 'iio_kfifo_allocate()' in order
to simplify code and avoid a memory leak in an error path in
'sca3000_probe()'. A call to 'sca3000_unconfigure_ring()' was missing.

Sent via the next merge window as unimportant bug and there are
other patches dependent on it.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/iio/accel/sca3000.c | 9 +--------
1 file changed, 1 insertion(+), 8 deletions(-)

--- a/drivers/iio/accel/sca3000.c
+++ b/drivers/iio/accel/sca3000.c
@@ -1277,7 +1277,7 @@ static int sca3000_configure_ring(struct
{
struct iio_buffer *buffer;

- buffer = iio_kfifo_allocate();
+ buffer = devm_iio_kfifo_allocate(&indio_dev->dev);
if (!buffer)
return -ENOMEM;

@@ -1287,11 +1287,6 @@ static int sca3000_configure_ring(struct
return 0;
}

-static void sca3000_unconfigure_ring(struct iio_dev *indio_dev)
-{
- iio_kfifo_free(indio_dev->buffer);
-}
-
static inline
int __sca3000_hw_ring_state_set(struct iio_dev *indio_dev, bool state)
{
@@ -1547,8 +1542,6 @@ static int sca3000_remove(struct spi_dev
if (spi->irq)
free_irq(spi->irq, indio_dev);

- sca3000_unconfigure_ring(indio_dev);
-
return 0;
}


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