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authorNishanth Menon <nm@ti.com>2014-06-26 12:40:19 +0530
committerJason Cooper <jason@lakedaemon.net>2014-06-30 19:11:16 +0000
commit1d50d2ce6337724d30055bdbe082236cc86e6785 (patch)
treea6995b7b09b5f969b9413bc565a183fef12e5295 /drivers/irqchip
parent7171511eaec5bf23fb06078f59784a3a0626b38f (diff)
irqchip: crossbar: Dont use '0' to mark reserved interrupts
Today '0' is actually reserved, but may not be the same in the future. So, use a flag to mark the GIC interrupts that are reserved. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Sricharan R <r.sricharan@ti.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Link: https://lkml.kernel.org/r/1403766634-18543-2-git-send-email-r.sricharan@ti.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'drivers/irqchip')
-rw-r--r--drivers/irqchip/irq-crossbar.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/irqchip/irq-crossbar.c b/drivers/irqchip/irq-crossbar.c
index 3d15d16a7088..20105bcdf408 100644
--- a/drivers/irqchip/irq-crossbar.c
+++ b/drivers/irqchip/irq-crossbar.c
@@ -17,6 +17,7 @@
#include <linux/irqchip/arm-gic.h>
#define IRQ_FREE -1
+#define IRQ_RESERVED -2
#define GIC_IRQ_START 32
/*
@@ -139,7 +140,7 @@ static int __init crossbar_of_init(struct device_node *node)
pr_err("Invalid reserved entry\n");
goto err3;
}
- cb->irq_map[entry] = 0;
+ cb->irq_map[entry] = IRQ_RESERVED;
}
}
@@ -170,7 +171,7 @@ static int __init crossbar_of_init(struct device_node *node)
* reserved irqs. so find and store the offsets once.
*/
for (i = 0; i < max; i++) {
- if (!cb->irq_map[i])
+ if (cb->irq_map[i] == IRQ_RESERVED)
continue;
cb->register_offsets[i] = reserved;