mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-25 08:21:14 +00:00
45 lines
1.5 KiB
Diff
45 lines
1.5 KiB
Diff
From cde59bef2f155fc38413e470ff0e4672623cdbec Mon Sep 17 00:00:00 2001
|
|
From: Tony Wu <tung7970@gmail.com>
|
|
Date: Fri, 21 Jun 2013 10:13:08 +0000
|
|
Subject: [PATCH 201/215] MIPS: GIC: Fix gic_set_affinity infinite loop
|
|
|
|
There is an infinite loop in gic_set_affinity. When irq_set_affinity
|
|
gets called on gic controller, it blocks forever.
|
|
|
|
Signed-off-by: Tony Wu <tung7970@gmail.com>
|
|
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
|
|
Cc: linux-mips@linux-mips.org
|
|
Patchwork: https://patchwork.linux-mips.org/patch/5537/
|
|
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
|
|
(cherry picked from commit c214c03512b67e56dea3f4471705f8caae49553a)
|
|
---
|
|
arch/mips/kernel/irq-gic.c | 15 +++++++--------
|
|
1 file changed, 7 insertions(+), 8 deletions(-)
|
|
|
|
--- a/arch/mips/kernel/irq-gic.c
|
|
+++ b/arch/mips/kernel/irq-gic.c
|
|
@@ -219,16 +219,15 @@ static int gic_set_affinity(struct irq_d
|
|
|
|
/* Assumption : cpumask refers to a single CPU */
|
|
spin_lock_irqsave(&gic_lock, flags);
|
|
- for (;;) {
|
|
- /* Re-route this IRQ */
|
|
- GIC_SH_MAP_TO_VPE_SMASK(irq, first_cpu(tmp));
|
|
|
|
- /* Update the pcpu_masks */
|
|
- for (i = 0; i < NR_CPUS; i++)
|
|
- clear_bit(irq, pcpu_masks[i].pcpu_mask);
|
|
- set_bit(irq, pcpu_masks[first_cpu(tmp)].pcpu_mask);
|
|
+ /* Re-route this IRQ */
|
|
+ GIC_SH_MAP_TO_VPE_SMASK(irq, first_cpu(tmp));
|
|
+
|
|
+ /* Update the pcpu_masks */
|
|
+ for (i = 0; i < NR_CPUS; i++)
|
|
+ clear_bit(irq, pcpu_masks[i].pcpu_mask);
|
|
+ set_bit(irq, pcpu_masks[first_cpu(tmp)].pcpu_mask);
|
|
|
|
- }
|
|
cpumask_copy(d->affinity, cpumask);
|
|
spin_unlock_irqrestore(&gic_lock, flags);
|
|
|