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| author | Tony Wu <tung7970@gmail.com> | 2013-06-21 10:13:08 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2013-07-01 15:10:56 +0200 |
| commit | c214c03512b67e56dea3f4471705f8caae49553a (patch) | |
| tree | d2bf8da1ece97223e37f4554a648f5feb6b48c68 /arch/mips/kernel | |
| parent | 8dfdd02a4c9de3aa7f2bfdec515e57340e401c87 (diff) | |
| download | op-kernel-dev-c214c03512b67e56dea3f4471705f8caae49553a.zip op-kernel-dev-c214c03512b67e56dea3f4471705f8caae49553a.tar.gz | |
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>
Diffstat (limited to 'arch/mips/kernel')
| -rw-r--r-- | arch/mips/kernel/irq-gic.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/arch/mips/kernel/irq-gic.c b/arch/mips/kernel/irq-gic.c index c01b307..5b5ddb2 100644 --- 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_data *d, const struct cpumask *cpumask, /* 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); |
