From 3e390fb827765b7e8c6e00efb4a74476ec080981 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michael=20B=C3=BCsch?= <mb@bu3sch.de>
Date: Mon, 28 Feb 2011 20:24:56 +0000
Subject: [PATCH] cbus-retu: Add IRQ handler locking
SVN-Revision: 25796
---
.../506-cbus-retu-irq-handler-locking.patch | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
create mode 100644 target/linux/omap24xx/patches-2.6.38/506-cbus-retu-irq-handler-locking.patch
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;
--
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