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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>
This commit is contained in:
Nishanth Menon 2014-06-26 12:40:19 +05:30 committed by Jason Cooper
parent 7171511eae
commit 1d50d2ce63
1 changed files with 3 additions and 2 deletions
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5
drivers/irqchip/irq-crossbar.c
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@ -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;