3.2.67-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Keerthy <j-keerthy@xxxxxx>
commit c4cf0935a2d8fe6d186bf4253ea3c4b4a8a8a710 upstream.
Correct returning IRQ_HANDLED unconditionally in the irq handler.
Return IRQ_NONE for some interrupt which we do not expect to be
handled in this handler. This prevents kernel stalling with back
to back spurious interrupts.
Fixes: 2722e56de6 ("OMAP4: l3: Introduce l3-interconnect error handling driver")
Acked-by: Nishanth Menon <nm@xxxxxx>
Signed-off-by: Keerthy <j-keerthy@xxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
[bwh: Backported to 3.2: adjust filename, indentation]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
--- a/arch/arm/mach-omap2/omap_l3_noc.c
+++ b/arch/arm/mach-omap2/omap_l3_noc.c
@@ -121,11 +121,15 @@ static irqreturn_t l3_interrupt_handler(
/* Nothing to be handled here as of now */
break;
}
- /* Error found so break the for loop */
- break;
+ /* Error found so break the for loop */
+ return IRQ_HANDLED;
}
}
- return IRQ_HANDLED;
+
+ dev_err(l3->dev, "L3 %s IRQ not handled!!\n",
+ inttype ? "debug" : "application");
+
+ return IRQ_NONE;
}
static int __devinit omap4_l3_probe(struct platform_device *pdev)
--
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