[PATCH AUTOSEL for 4.4 05/16] spi: sh-msiof: Fix DMA transfer size check

[alexander . levin]

From: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@xxxxxxxxxxx>

[ Upstream commit 36735783fdb599c94b9c86824583df367c65900b ]

DMA supports 32-bit words only,
even if BITLEN1 of SITMDR2 register is 16bit.

Fixes: b0d0ce8b6b91 ("spi: sh-msiof: Add DMA support")
Signed-off-by: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@xxxxxxxxxxx>
Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
Acked-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Acked-by: Dirk Behme <dirk.behme@xxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
---
 drivers/spi/spi-sh-msiof.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index d22de4c8c399..3de39bd794b6 100644
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -863,7 +863,7 @@ static int sh_msiof_transfer_one(struct spi_master *master,
 				break;
 			copy32 = copy_bswap32;
 		} else if (bits <= 16) {
-			if (l & 1)
+			if (l & 3)
 				break;
 			copy32 = copy_wswap32;
 		} else {
-- 
2.11.0