From: Mike Frysinger <vapier-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org>
To: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
David Brownell
<dbrownell-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>,
Grant Likely
<grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
Cc: uclinux-dist-devel-ZG0+EudsQA8dtHy/vicBwGD2FQJk+8+b@public.gmane.org,
Bob Liu <lliubbo-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: [PATCH] spi/bfin_spi: fix reverse condition during interrupt mode
Date: Wed, 15 Jun 2011 15:41:11 -0400 [thread overview]
Message-ID: <1308166871-27312-1-git-send-email-vapier@gentoo.org> (raw)
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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reply other threads:[~2011-06-15 19:41 UTC|newest]
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