summaryrefslogtreecommitdiffstats
path: root/kernel/irq
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/irq')
-rw-r--r--kernel/irq/irqdesc.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index c7ddc87d6c87..4c60a50e66b2 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -344,6 +344,12 @@ irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node)
if (!cnt)
return -EINVAL;
+ if (irq >= 0) {
+ if (from > irq)
+ return -EINVAL;
+ from = irq;
+ }
+
mutex_lock(&sparse_irq_lock);
start = bitmap_find_next_zero_area(allocated_irqs, IRQ_BITMAP_BITS,
OpenPOWER on IntegriCloud