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authormb <mb@3c298f89-4303-0410-b956-a3cf2f4a3e73>2011-02-28 20:24:56 +0000
committermb <mb@3c298f89-4303-0410-b956-a3cf2f4a3e73>2011-02-28 20:24:56 +0000
commit292d6a5ec26e4019878e7120b6070cecd06d957d (patch)
treeda2126eaf3d19f9d0d61174f9c7eb876bd90f689 /target
parent9c26cd0e621418d3b12022f91bbc10d95841d629 (diff)
cbus-retu: Add IRQ handler locking
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@25796 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target')
-rw-r--r--target/linux/omap24xx/patches-2.6.38/506-cbus-retu-irq-handler-locking.patch18
1 files changed, 18 insertions, 0 deletions
diff --git a/target/linux/omap24xx/patches-2.6.38/506-cbus-retu-irq-handler-locking.patch b/target/linux/omap24xx/patches-2.6.38/506-cbus-retu-irq-handler-locking.patch
new file mode 100644
index 0000000000..364ffa386e
--- /dev/null
+++ b/target/linux/omap24xx/patches-2.6.38/506-cbus-retu-irq-handler-locking.patch
@@ -0,0 +1,18 @@
+Index: linux-2.6.38-rc6/drivers/cbus/retu.c
+===================================================================
+--- linux-2.6.38-rc6.orig/drivers/cbus/retu.c 2011-02-28 15:21:10.645505891 +0100
++++ linux-2.6.38-rc6/drivers/cbus/retu.c 2011-02-28 15:22:24.030477769 +0100
+@@ -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;