[PATCH 3.16.y-ckt 093/170] spi: pl022: Fix incorrect dma_unmap_sg

[Luis Henriques]

3.16.7-ckt1 -stable review patch.  If anyone has any objections, please let me know.

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

From: Ray Jui <rjui at broadcom.com>

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 at broadcom.com>
Signed-off-by: Mark Brown <broonie at kernel.org>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/spi/spi-pl022.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index 66d2ae21e78e..abc69c00e693 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -1074,7 +1074,7 @@ 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:
-- 
2.1.0