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authorSantosh Shilimkar <santosh.shilimkar@ti.com>2011-09-09 13:59:35 +0530
committerThomas Gleixner <tglx@linutronix.de>2011-09-12 09:52:49 +0200
commit60f96b41f71d2a13d1c0a457b8b77958f77142d1 (patch)
tree3fdfa3f9a2e762139383938f0199ed2ed9ee5640 /kernel
parented585a651681e822089087b426e6ebfb6d3d9873 (diff)
downloadlinux-60f96b41f71d2a13d1c0a457b8b77958f77142d1.tar.gz
genirq: Add IRQCHIP_SKIP_SET_WAKE flag
Some irq chips need the irq_set_wake() functionality, but do not require a irq_set_wake() callback. Instead of forcing an empty callback to be implemented add a flag which notes this fact. Check for the flag in set_irq_wake_real() and return success when set. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Cc: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/irq/manage.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 9b956fa20308..7e1a3ed1e61a 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -467,6 +467,9 @@ static int set_irq_wake_real(unsigned int irq, unsigned int on)
struct irq_desc *desc = irq_to_desc(irq);
int ret = -ENXIO;
+ if (irq_desc_get_chip(desc)->flags & IRQCHIP_SKIP_SET_WAKE)
+ return 0;
+
if (desc->irq_data.chip->irq_set_wake)
ret = desc->irq_data.chip->irq_set_wake(&desc->irq_data, on);