diff options
| author | Gavin Li <git@thegavinli.com> | 2015-01-06 18:47:23 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-01-29 17:40:45 -0800 |
| commit | 449af2873ea16ef0da68bf64dcef78048d4427d1 (patch) | |
| tree | 89f93edb43f1085ea86d12166119dc636579e35e | |
| parent | 24f1a316c4bfeed2e1d9a7803545839e2d2e4a0b (diff) | |
irqchip: atmel-aic-common: Prevent clobbering of priority when changing IRQ type
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 <gavinli@thegavinli.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Link: https://lkml.kernel.org/r/1420598843-8409-1-git-send-email-gavinli@thegavinli.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/irqchip/irq-atmel-aic-common.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/irqchip/irq-atmel-aic-common.c b/drivers/irqchip/irq-atmel-aic-common.c index cc4f9d80122e..fa22e5ba3d33 100644 --- 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 *d, unsigned type, unsigned *val) return -EINVAL; } - *val &= AT91_AIC_SRCTYPE; + *val &= ~AT91_AIC_SRCTYPE; *val |= aic_type; return 0; |