diff options
Diffstat (limited to 'arch/ia64/kernel/iosapic.c')
| -rw-r--r-- | arch/ia64/kernel/iosapic.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c index 7936b62f7a2e..a13df592ebf7 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 |