Eric Lee / smarc-ti-linux-kernel

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Commit 1d50d2ce6337724d30055bdbe082236cc86e6785

Authored by Nishanth Menon
Committed by Jason Cooper
1 parent 7171511eae
Exists in ti-lsk-linux-4.1.y and in 10 other branches dlt-processor-sdk-linux-03.00.00.04, processor-sdk-linux-02.00.01, smarc-ti-lsk-linux-4.1.y, smarct3x-processor-sdk-04.01.00.06, smarct3x-processor-sdk-linux-02.00.01, smarct3x-processor-sdk-linux-03.00.00.04, smarct4x-800-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-04.01.00.06, smarct4x-processor-sdk-linux-02.00.01, smarct4x-processor-sdk-linux-03.00.00.04

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>

Showing 1 changed file with 3 additions and 2 deletions Side-by-side Diff

drivers/irqchip/irq-crossbar.c
Diff comments   View file @ 1d50d2c
... ... @@ -17,6 +17,7 @@
17 17 #include <linux/irqchip/arm-gic.h>
18 18  
19 19 #define IRQ_FREE -1
  20 +#define IRQ_RESERVED -2
20 21 #define GIC_IRQ_START 32
21 22  
22 23 /*
... ... @@ -139,7 +140,7 @@
139 140 pr_err("Invalid reserved entry\n");
140 141 goto err3;
141 142 }
142   - cb->irq_map[entry] = 0;
  143 + cb->irq_map[entry] = IRQ_RESERVED;
143 144 }
144 145 }
145 146  
... ... @@ -170,7 +171,7 @@
170 171 * reserved irqs. so find and store the offsets once.
171 172 */
172 173 for (i = 0; i < max; i++) {
173   - if (!cb->irq_map[i])
  174 + if (cb->irq_map[i] == IRQ_RESERVED)
174 175 continue;
175 176  
176 177 cb->register_offsets[i] = reserved;