spi: pl022: Fix incorrect dma_unmap_sg

commit 3ffa6158f002e096d28ede71be4e0ee8ab20baa2 upstream.

When mapped RX DMA entries are unmapped in an error condition when DMA
is firstly configured in the driver, the number of TX DMA entries was
passed in, which is incorrect

Signed-off-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index 2789b452e71159a86164ff752ef2c1e06a6da411..971855e859c75c977816481fd90152b8f0af5443 100644 (file)
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -1075,7 +1075,7 @@ err_rxdesc:
                     pl022->sgt_tx.nents, DMA_TO_DEVICE);
 err_tx_sgmap:
        dma_unmap_sg(rxchan->device->dev, pl022->sgt_rx.sgl,
-                    pl022->sgt_tx.nents, DMA_FROM_DEVICE);
+                    pl022->sgt_rx.nents, DMA_FROM_DEVICE);
 err_rx_sgmap:
        sg_free_table(&pl022->sgt_tx);
 err_alloc_tx_sg: