3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Gavin Li <g...@thegavinli.com>

commit 91d1179212161f220938198b742c328ad38fd0a3 upstream.

This patch makes the bitmask for AIC_SRCTYPE consistent
with that of its valid values, and prevents the priority
field at bits 2:0 from being clobbered by an incorrect
AND with the AIC_SRCTYPE mask.

Signed-off-by: Gavin Li <gavi...@thegavinli.com>
Acked-by: Boris Brezillon <boris.brezil...@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.fe...@atmel.com>
Link: 
https://lkml.kernel.org/r/1420598843-8409-1-git-send-email-gavi...@thegavinli.com
Signed-off-by: Jason Cooper <ja...@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/irqchip/irq-atmel-aic-common.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/irqchip/irq-atmel-aic-common.c
+++ b/drivers/irqchip/irq-atmel-aic-common.c
@@ -28,7 +28,7 @@
 #define AT91_AIC_IRQ_MIN_PRIORITY      0
 #define AT91_AIC_IRQ_MAX_PRIORITY      7
 
-#define AT91_AIC_SRCTYPE               GENMASK(7, 6)
+#define AT91_AIC_SRCTYPE               GENMASK(6, 5)
 #define AT91_AIC_SRCTYPE_LOW           (0 << 5)
 #define AT91_AIC_SRCTYPE_FALLING       (1 << 5)
 #define AT91_AIC_SRCTYPE_HIGH          (2 << 5)
@@ -74,7 +74,7 @@ int aic_common_set_type(struct irq_data
                return -EINVAL;
        }
 
-       *val &= AT91_AIC_SRCTYPE;
+       *val &= ~AT91_AIC_SRCTYPE;
        *val |= aic_type;
 
        return 0;


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