openwrt-xburst/target/linux/omap24xx/patches-2.6.38/506-cbus-retu-irq-handler-locking.patch

--- a/drivers/cbus/retu.c
+++ b/drivers/cbus/retu.c
@@ -198,10 +198,12 @@ static irqreturn_t retu_irq_handler(int
 	u16			idr;
 	u16			imr;
 
+	mutex_lock(&retu->mutex);
 	idr = __retu_read_reg(retu, RETU_REG_IDR);
 	imr = __retu_read_reg(retu, RETU_REG_IMR);
-	idr &= ~imr;
+	mutex_unlock(&retu->mutex);
 
+	idr &= ~imr;
 	if (!idr) {
 		dev_vdbg(retu->dev, "No IRQ, spurious?\n");
 		return IRQ_NONE;
kernel: update kernel from 2.6.38.2 to 2.6.38.6 and refresh patches Thank you Peter Wagner for the patch. I refreshed the kernel patches and added the md5sum of the kernel. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26905 3c298f89-4303-0410-b956-a3cf2f4a3e73 2011-05-15 20:23:02 +03:00			`--- a/drivers/cbus/retu.c`
			`+++ b/drivers/cbus/retu.c`
cbus-retu: Add IRQ handler locking git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25796 3c298f89-4303-0410-b956-a3cf2f4a3e73 2011-02-28 22:24:56 +02:00			`@@ -198,10 +198,12 @@ static irqreturn_t retu_irq_handler(int`
			`u16 idr;`
			`u16 imr;`

			`+ mutex_lock(&retu->mutex);`
			`idr = __retu_read_reg(retu, RETU_REG_IDR);`
			`imr = __retu_read_reg(retu, RETU_REG_IMR);`
			`- idr &= ~imr;`
			`+ mutex_unlock(&retu->mutex);`

			`+ idr &= ~imr;`
			`if (!idr) {`
			`dev_vdbg(retu->dev, "No IRQ, spurious?\n");`
			`return IRQ_NONE;`