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-rw-r--r--kernel/irq/autoprobe.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/kernel/irq/autoprobe.c b/kernel/irq/autoprobe.c
index c45ab71..b3a5549 100644
--- a/kernel/irq/autoprobe.c
+++ b/kernel/irq/autoprobe.c
@@ -40,6 +40,8 @@ unsigned long probe_irq_on(void)
*/
for (i = nr_irqs-1; i > 0; i--) {
desc = irq_to_desc(i);
+ if (!desc)
+ continue;
spin_lock_irq(&desc->lock);
if (!desc->action && !(desc->status & IRQ_NOPROBE)) {
@@ -70,6 +72,8 @@ unsigned long probe_irq_on(void)
*/
for (i = nr_irqs-1; i > 0; i--) {
desc = irq_to_desc(i);
+ if (!desc)
+ continue;
spin_lock_irq(&desc->lock);
if (!desc->action && !(desc->status & IRQ_NOPROBE)) {
@@ -93,6 +97,8 @@ unsigned long probe_irq_on(void)
unsigned int status;
desc = irq_to_desc(i);
+ if (!desc)
+ continue;
spin_lock_irq(&desc->lock);
status = desc->status;
@@ -134,6 +140,8 @@ unsigned int probe_irq_mask(unsigned long val)
struct irq_desc *desc = irq_to_desc(i);
unsigned int status;
+ if (!desc)
+ continue;
spin_lock_irq(&desc->lock);
status = desc->status;
@@ -177,6 +185,8 @@ int probe_irq_off(unsigned long val)
struct irq_desc *desc = irq_to_desc(i);
unsigned int status;
+ if (!desc)
+ continue;
spin_lock_irq(&desc->lock);
status = desc->status;
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