| From foo@baz Wed Dec 6 18:04:41 CET 2017 |
| From: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com> |
| Date: Thu, 2 Nov 2017 10:32:36 +0100 |
| Subject: spi: sh-msiof: Fix DMA transfer size check |
| |
| From: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com> |
| |
| |
| [ 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@renesas.com> |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> |
| Acked-by: Dirk Behme <dirk.behme@de.bosch.com> |
| Signed-off-by: Mark Brown <broonie@kernel.org> |
| Signed-off-by: Sasha Levin <alexander.levin@verizon.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| drivers/spi/spi-sh-msiof.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/drivers/spi/spi-sh-msiof.c |
| +++ b/drivers/spi/spi-sh-msiof.c |
| @@ -900,7 +900,7 @@ static int sh_msiof_transfer_one(struct |
| break; |
| copy32 = copy_bswap32; |
| } else if (bits <= 16) { |
| - if (l & 1) |
| + if (l & 3) |
| break; |
| copy32 = copy_wswap32; |
| } else { |
