[PATCH] spi/bfin_spi: fix reverse condition during interrupt mode

[PATCH] spi/bfin_spi: fix reverse condition during interrupt mode

[Mike Frysinger]

From: Bob Liu <lliubbo-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

Commit 4d676fc5c39a677aa72148 "drivers:spi_bfin5xx: add support for
multiples of 8bits" introduced a bug during interrupt mode.  The if
condition was inverted which can cause some bugs such as the SPI
mmc in interrupt mode fails to detect SD cards.

Signed-off-by: Bob Liu <lliubbo-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Signed-off-by: Mike Frysinger <vapier-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org>
---
 drivers/spi/spi_bfin5xx.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index f706dba..ae30fa3 100644
--- a/drivers/spi/spi_bfin5xx.c
+++ b/drivers/spi/spi_bfin5xx.c
@@ -436,7 +436,7 @@ static irqreturn_t bfin_spi_pio_irq_handler(int irq, void *dev_id)
 		/* last read */
 		if (drv_data->rx) {
 			dev_dbg(&drv_data->pdev->dev, "last read\n");
-			if (n_bytes % 2) {
+			if (!(n_bytes % 2)) {
 				u16 *buf = (u16 *)drv_data->rx;
 				for (loop = 0; loop < n_bytes / 2; loop++)
 					*buf++ = read_RDBR(drv_data);
@@ -464,7 +464,7 @@ static irqreturn_t bfin_spi_pio_irq_handler(int irq, void *dev_id)
 	if (drv_data->rx && drv_data->tx) {
 		/* duplex */
 		dev_dbg(&drv_data->pdev->dev, "duplex: write_TDBR\n");
-		if (n_bytes % 2) {
+		if (!(n_bytes % 2)) {
 			u16 *buf = (u16 *)drv_data->rx;
 			u16 *buf2 = (u16 *)drv_data->tx;
 			for (loop = 0; loop < n_bytes / 2; loop++) {
@@ -482,7 +482,7 @@ static irqreturn_t bfin_spi_pio_irq_handler(int irq, void *dev_id)
 	} else if (drv_data->rx) {
 		/* read */
 		dev_dbg(&drv_data->pdev->dev, "read: write_TDBR\n");
-		if (n_bytes % 2) {
+		if (!(n_bytes % 2)) {
 			u16 *buf = (u16 *)drv_data->rx;
 			for (loop = 0; loop < n_bytes / 2; loop++) {
 				*buf++ = read_RDBR(drv_data);
@@ -498,7 +498,7 @@ static irqreturn_t bfin_spi_pio_irq_handler(int irq, void *dev_id)
 	} else if (drv_data->tx) {
 		/* write */
 		dev_dbg(&drv_data->pdev->dev, "write: write_TDBR\n");
-		if (n_bytes % 2) {
+		if (!(n_bytes % 2)) {
 			u16 *buf = (u16 *)drv_data->tx;
 			for (loop = 0; loop < n_bytes / 2; loop++) {
 				read_RDBR(drv_data);
-- 
1.7.5.3


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