[PATCH] spi: sh-msiof: Fix the limit of data length when calculating the length of words

[Nguyen An Hoan <na-hoan@xxxxxxxxxxx>]

From: Hoan Nguyen An <na-hoan@xxxxxxxxxxx>

We can use each word (data length) of 32bits (4 bytes),
so that if the length is greater than 3bytes, we can
align it with 4bytes of words.

Signed-off-by: Hoan Nguyen An <na-hoan@xxxxxxxxxxx>
---
 drivers/spi/spi-sh-msiof.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c
index e2eb466..1552c14 100644
--- a/drivers/spi/spi-sh-msiof.c
+++ b/drivers/spi/spi-sh-msiof.c
@@ -930,7 +930,7 @@ static int sh_msiof_transfer_one(struct spi_controller *ctlr,
 	if (!spi_controller_is_slave(p->ctlr))
 		sh_msiof_spi_set_clk_regs(p, clk_get_rate(p->clk), t->speed_hz);
 
-	while (ctlr->dma_tx && len > 15) {
+	while (ctlr->dma_tx && len > 3) {
 		/*
 		 *  DMA supports 32-bit words only, hence pack 8-bit and 16-bit
 		 *  words, with byte resp. word swapping.
@@ -974,7 +974,7 @@ static int sh_msiof_transfer_one(struct spi_controller *ctlr,
 			return 0;
 	}
 
-	if (bits <= 8 && len > 15) {
+	if (bits <= 8 && len > 3) {
 		bits = 32;
 		swab = true;
 	} else {
-- 
2.7.4