staging: iio: error case memory leak fix

The data pointer should be freed in the error
cases of adis16400_trigger_handler().

Signed-off-by: Andre Bartke <andre.bartke@gmail.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/iio/imu/adis16400_ring.c b/drivers/staging/iio/imu/adis16400_ring.c
index 2589a7e167e4e94772fe36e8b215ea904f0873ea..3612373ddede3ff90a642432d260f931c23729f1 100644 (file)
--- a/drivers/staging/iio/imu/adis16400_ring.c
+++ b/drivers/staging/iio/imu/adis16400_ring.c
@@ -137,13 +137,13 @@ static irqreturn_t adis16400_trigger_handler(int irq, void *p)
                if (st->variant->flags & ADIS16400_NO_BURST) {
                        ret = adis16350_spi_read_all(&indio_dev->dev, st->rx);
                        if (ret < 0)
-                               return ret;
+                               goto err;
                        for (; i < ring->scan_count; i++)
                                data[i] = *(s16 *)(st->rx + i*2);
                } else {
                        ret = adis16400_spi_read_burst(&indio_dev->dev, st->rx);
                        if (ret < 0)
-                               return ret;
+                               goto err;
                        for (; i < indio_dev->ring->scan_count; i++) {
                                j = __ffs(mask);
                                mask &= ~(1 << j);
@@ -158,9 +158,13 @@ static irqreturn_t adis16400_trigger_handler(int irq, void *p)
        ring->access->store_to(indio_dev->ring, (u8 *) data, pf->timestamp);
 
        iio_trigger_notify_done(indio_dev->trig);
-       kfree(data);
 
+       kfree(data);
        return IRQ_HANDLED;
+
+err:
+       kfree(data);
+       return ret;
 }
 
 void adis16400_unconfigure_ring(struct iio_dev *indio_dev)