[PATCH v2 2/2] bus: omap_l3_noc: Correct returning IRQ_HANDLED unconditionally in the irq handler

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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>
---

Changes from v1:

    * Added the Fixes tag to the commit log with the right commit ID of the
      patch that is fixed.

 drivers/bus/omap_l3_noc.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/bus/omap_l3_noc.c b/drivers/bus/omap_l3_noc.c
index b5eac29..17d8659 100644
--- a/drivers/bus/omap_l3_noc.c
+++ b/drivers/bus/omap_l3_noc.c
@@ -222,10 +222,14 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3)
 			}
 
 			/* Error found so break the for loop */
-			break;
+			return IRQ_HANDLED;
 		}
 	}
-	return IRQ_HANDLED;
+
+	dev_err(l3->dev, "L3 %s IRQ not handled!!\n",
+		inttype ? "debug" : "application");
+
+	return IRQ_NONE;
 }
 
 static const struct of_device_id l3_noc_match[] = {
-- 
1.7.9.5

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