spi: spi_bfin: bugfix for 8..16 bit word sizes

Fix bug in u16_cs_chg_reader to read data_len-2 bytes data firstly, then read
out the last 2 bytes data

Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index c4c4905..25b0efc 100644 (file)
--- a/drivers/spi/spi_bfin5xx.c
+++ b/drivers/spi/spi_bfin5xx.c
@@ -501,7 +501,7 @@ static void u16_cs_chg_reader(struct driver_data *drv_data)
        cs_active(drv_data, chip);
        dummy_read(drv_data);
 
-       while (drv_data->rx < drv_data->rx_end) {
+       while (drv_data->rx < drv_data->rx_end - 2) {
                cs_deactive(drv_data, chip);
 
                if (chip->cs_chg_udelay)