diff options
| author | Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> | 2005-07-28 14:42:00 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2005-08-04 22:25:48 -0400 |
| commit | 14454a1b3ff8d1d15fbe7cc77f27373777184ddf (patch) | |
| tree | 47257b3644c038e8d9fab5ec2c710cb064f79484 /arch/ia64/kernel/iosapic.c | |
| parent | 58e0276245f6c60119f0384e7eca576b08aa89e2 (diff) | |
[ACPI] iosapic_register_intr() now returns error instead of panic
error condition is passed along by acpi_register_gsi().
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/ia64/kernel/iosapic.c')
| -rw-r--r-- | arch/ia64/kernel/iosapic.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c index 88b014381df5..40afbfa47eca 100644 --- a/arch/ia64/kernel/iosapic.c +++ b/arch/ia64/kernel/iosapic.c @@ -562,7 +562,7 @@ 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) { @@ -577,7 +577,7 @@ 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; @@ -588,7 +588,7 @@ 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; @@ -735,8 +736,11 @@ again: /* If vector is running out, we try to find a sharable vector */ vector = assign_irq_vector_nopanic(AUTO_ASSIGN); - if (vector < 0) + if (vector < 0) { vector = iosapic_find_sharable_vector(trigger, polarity); + if (vector < 0) + Return -ENOSPC; + } spin_lock_irqsave(&irq_descp(vector)->lock, flags); spin_lock(&iosapic_lock); @@ -750,8 +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 |