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authorThomas Gleixner <tglx@linutronix.de>2014-03-04 20:43:39 +0000
committerThomas Gleixner <tglx@linutronix.de>2014-03-12 13:07:40 +0100
commit421d1563c6620423d23e394711e3f209e585c161 (patch)
treed457d6ee0fc69b8e1898392dece144f0589a3bc0 /arch/mips/sibyte
parent785aebd0cfff52e735ad4fd188d3726b5affc8e5 (diff)
downloadlinux-421d1563c6620423d23e394711e3f209e585c161.tar.bz2
mips: Validate online cpus in irq_set_affinity() callbacks
The [user space] interface does not filter out offline cpus. It merily guarantees that the mask contains at least one online cpu. So the selector in the irq chip implementation needs to make sure to pick only an online cpu because otherwise: Offline Core 1 Set affinity to 0xe (is valid due to online mask 0xd) cpumask_first will pick core 1, which is offline Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Link: http://lkml.kernel.org/r/20140304203100.744800502@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/mips/sibyte')
-rw-r--r--arch/mips/sibyte/bcm1480/irq.c2
-rw-r--r--arch/mips/sibyte/sb1250/irq.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/arch/mips/sibyte/bcm1480/irq.c b/arch/mips/sibyte/bcm1480/irq.c
index 09d6e16a70f1..59cfe2659771 100644
--- a/arch/mips/sibyte/bcm1480/irq.c
+++ b/arch/mips/sibyte/bcm1480/irq.c
@@ -95,7 +95,7 @@ static int bcm1480_set_affinity(struct irq_data *d, const struct cpumask *mask,
u64 cur_ints;
unsigned long flags;
- i = cpumask_first(mask);
+ i = cpumask_first_and(mask, cpu_online_mask);
/* Convert logical CPU to physical CPU */
cpu = cpu_logical_map(i);
diff --git a/arch/mips/sibyte/sb1250/irq.c b/arch/mips/sibyte/sb1250/irq.c
index fca0cdb99509..6d8dba5cf348 100644
--- a/arch/mips/sibyte/sb1250/irq.c
+++ b/arch/mips/sibyte/sb1250/irq.c
@@ -88,7 +88,7 @@ static int sb1250_set_affinity(struct irq_data *d, const struct cpumask *mask,
u64 cur_ints;
unsigned long flags;
- i = cpumask_first(mask);
+ i = cpumask_first_and(mask, cpu_online_mask);
/* Convert logical CPU to physical CPU */
cpu = cpu_logical_map(i);