[PATCH v3 3/3] spi: spi-fsl-dspi: Fix incorrect freeing of DMA allocated buffers

[Sanchayan Maity]

Buffers allocated with a call to dma_alloc_coherent should be
freed with dma_free_coherent instead of the currently used
devm_kfree.

Signed-off-by: Sanchayan Maity <maitysancha...@gmail.com>
---
 drivers/spi/spi-fsl-dspi.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c
index 8af3151..7ada112 100644
--- a/drivers/spi/spi-fsl-dspi.c
+++ b/drivers/spi/spi-fsl-dspi.c
@@ -420,9 +420,11 @@ static int dspi_request_dma(struct fsl_dspi *dspi, 
phys_addr_t phy_addr)
        return 0;
 
 err_slave_config:
-       devm_kfree(dev, dma->rx_dma_buf);
+       dma_free_coherent(dev, DSPI_DMA_BUFSIZE,
+                       dma->rx_dma_buf, dma->rx_dma_phys);
 err_rx_dma_buf:
-       devm_kfree(dev, dma->tx_dma_buf);
+       dma_free_coherent(dev, DSPI_DMA_BUFSIZE,
+                       dma->tx_dma_buf, dma->tx_dma_phys);
 err_tx_dma_buf:
        dma_release_channel(dma->chan_tx);
 err_tx_channel:
-- 
2.10.2