The depth could be from 2 to 256 from HW spec, so fix off-by-one for checking
fifo depth.
Signed-off-by: Axel Lin <axel....@ingics.com>
---
Hi,
I don't have this hardware handy, so please test it.
drivers/spi/designware_spi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/spi/designware_spi.c b/drivers/spi/designware_spi.c
index 98c9f03..14d0c23 100644
--- a/drivers/spi/designware_spi.c
+++ b/drivers/spi/designware_spi.c
@@ -164,7 +164,7 @@ static void spi_hw_init(struct dw_spi_priv *priv)
if (!priv->fifo_len) {
u32 fifo;
- for (fifo = 2; fifo <= 257; fifo++) {
+ for (fifo = 2; fifo <= 256; fifo++) {
dw_writew(priv, DW_SPI_TXFLTR, fifo);
if (fifo != dw_readw(priv, DW_SPI_TXFLTR))
break;
--
1.9.1
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