spi: sh-msiof: Fix DMA transfer size check

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 <[email protected]>
Signed-off-by: Simon Horman <[email protected]>
Acked-by: Geert Uytterhoeven <[email protected]>
Acked-by: Dirk Behme <[email protected]>
Signed-off-by: Mark Brown <[email protected]>

diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index 0eb1e95834854fb658806b1aaefc19fb7bec69b3..837bb95eea623ff7dbdaf68d22c7ed9468b1ce7f 100644 (file)
--- 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 spi_master *master,
                                break;
                        copy32 = copy_bswap32;
                } else if (bits <= 16) {
-                       if (l & 1)
+                       if (l & 3)
                                break;
                        copy32 = copy_wswap32;
                } else {