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genirq: Reuse existing can set affinty check

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Add a !desc check while at it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2011-02-10 22:37:41 +01:00
parent a005677b3d
commit bce43032ad
2 changed files with 3 additions and 4 deletions
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4
kernel/irq/manage.c
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@ -73,8 +73,8 @@ int irq_can_set_affinity(unsigned int irq)
{
struct irq_desc *desc = irq_to_desc(irq);
if (!irqd_can_balance(&desc->irq_data) || !desc->irq_data.chip ||
!desc->irq_data.chip->irq_set_affinity)
if (!desc || !irqd_can_balance(&desc->irq_data) ||
!desc->irq_data.chip || !desc->irq_data.chip->irq_set_affinity)
return 0;
return 1;

3
kernel/irq/proc.c
View File

@ -66,8 +66,7 @@ static ssize_t irq_affinity_proc_write(struct file *file,
cpumask_var_t new_value;
int err;
if (!irq_to_desc(irq)->irq_data.chip->irq_set_affinity || no_irq_affinity ||
irq_balancing_disabled(irq))
if (!irq_can_set_affinity(irq) || no_irq_affinity)
return -EIO;
if (!alloc_cpumask_var(&new_value, GFP_KERNEL))