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Diffstat (limited to 'arch/ia64/kernel/iosapic.c')
-rw-r--r--arch/ia64/kernel/iosapic.c24
1 files changed, 14 insertions, 10 deletions
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index 7936b62f7a2..574084f343f 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -561,7 +561,7 @@ static inline int vector_is_shared (int vector)
return (iosapic_intr_info[vector].count > 1);
}
-static void
+static int
register_intr (unsigned int gsi, int vector, unsigned char delivery,
unsigned long polarity, unsigned long trigger)
{
@@ -576,7 +576,7 @@ register_intr (unsigned int gsi, int vector, unsigned char delivery,
index = find_iosapic(gsi);
if (index < 0) {
printk(KERN_WARNING "%s: No IOSAPIC for GSI %u\n", __FUNCTION__, gsi);
- return;
+ return -ENODEV;
}
iosapic_address = iosapic_lists[index].addr;
@@ -587,7 +587,7 @@ register_intr (unsigned int gsi, int vector, unsigned char delivery,
rte = iosapic_alloc_rte();
if (!rte) {
printk(KERN_WARNING "%s: cannot allocate memory\n", __FUNCTION__);
- return;
+ return -ENOMEM;
}
rte_index = gsi - gsi_base;
@@ -603,7 +603,7 @@ register_intr (unsigned int gsi, int vector, unsigned char delivery,
struct iosapic_intr_info *info = &iosapic_intr_info[vector];
if (info->trigger != trigger || info->polarity != polarity) {
printk (KERN_WARNING "%s: cannot override the interrupt\n", __FUNCTION__);
- return;
+ return -EINVAL;
}
}
@@ -623,6 +623,7 @@ register_intr (unsigned int gsi, int vector, unsigned char delivery,
__FUNCTION__, vector, idesc->handler->typename, irq_type->typename);
idesc->handler = irq_type;
}
+ return 0;
}
static unsigned int
@@ -710,7 +711,7 @@ int
iosapic_register_intr (unsigned int gsi,
unsigned long polarity, unsigned long trigger)
{
- int vector, mask = 1;
+ int vector, mask = 1, err;
unsigned int dest;
unsigned long flags;
struct iosapic_rte_info *rte;
@@ -737,8 +738,8 @@ again:
vector = assign_irq_vector(AUTO_ASSIGN);
if (vector < 0) {
vector = iosapic_find_sharable_vector(trigger, polarity);
- if (vector < 0)
- panic("%s: out of interrupt vectors!\n", __FUNCTION__);
+ if (vector < 0)
+ return -ENOSPC;
}
spin_lock_irqsave(&irq_descp(vector)->lock, flags);
@@ -753,8 +754,13 @@ again:
}
dest = get_target_cpu(gsi, vector);
- register_intr(gsi, vector, IOSAPIC_LOWEST_PRIORITY,
+ err = register_intr(gsi, vector, IOSAPIC_LOWEST_PRIORITY,
polarity, trigger);
+ if (err < 0) {
+ spin_unlock(&iosapic_lock);
+ spin_unlock_irqrestore(&irq_descp(vector)->lock, flags);
+ return err;
+ }
/*
* If the vector is shared and already unmasked for
@@ -776,7 +782,6 @@ again:
return vector;
}
-#ifdef CONFIG_ACPI_DEALLOCATE_IRQ
void
iosapic_unregister_intr (unsigned int gsi)
{
@@ -859,7 +864,6 @@ iosapic_unregister_intr (unsigned int gsi)
spin_unlock(&iosapic_lock);
spin_unlock_irqrestore(&idesc->lock, flags);
}
-#endif /* CONFIG_ACPI_DEALLOCATE_IRQ */
/*
* ACPI calls this when it finds an entry for a platform interrupt.