Messages in this thread Patch in this message | | | Date | Thu, 28 Jul 2005 16:58:23 +0900 | From | Kenji Kaneshige <> | Subject | [PATCH 2.6.13-rc3 6/6] failure of acpi_register_gsi() should be handled properly - change ia64 iosapic code |
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Change iosapic_register_intr(), which called by acpi_register_gsi(), to return negative value on error instead of panic.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
---
linux-2.6.13-rc3-kanesige/arch/ia64/kernel/iosapic.c | 20 ++++++++++++------- 1 files changed, 13 insertions(+), 7 deletions(-)
diff -puN arch/ia64/kernel/iosapic.c~handle-error-acpi_register_gsi-remove-panic-iosapic-ia64 arch/ia64/kernel/iosapic.c --- linux-2.6.13-rc3/arch/ia64/kernel/iosapic.c~handle-error-acpi_register_gsi-remove-panic-iosapic-ia64 2005-07-28 01:01:19.000000000 +0900 +++ linux-2.6.13-rc3-kanesige/arch/ia64/kernel/iosapic.c 2005-07-28 01:01:19.000000000 +0900 @@ -561,7 +561,7 @@ static inline int vector_is_shared (int 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 vec 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 vec 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 vec 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 vec __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; @@ -738,7 +739,7 @@ again: if (vector < 0) { vector = iosapic_find_sharable_vector(trigger, polarity); if (vector < 0) - panic("%s: out of interrupt vectors!\n", __FUNCTION__); + 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 _
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