From: Nishanth Menon Date: Thu, 26 Jun 2014 07:10:19 +0000 (+0530) Subject: irqchip: crossbar: Dont use '0' to mark reserved interrupts X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1d50d2ce6337724d30055bdbe082236cc86e6785;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git 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 Signed-off-by: Sricharan R Acked-by: Santosh Shilimkar Link: https://lkml.kernel.org/r/1403766634-18543-2-git-send-email-r.sricharan@ti.com Signed-off-by: Jason Cooper --- 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 #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;