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 --- 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 14052936b1c5..d9044569b4fe 100644 --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -818,7 +818,7 @@ 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 {