diff options
| -rw-r--r-- | arch/x86/kernel/apic.c | 13 | ||||
| -rw-r--r-- | arch/x86/kernel/io_apic.c | 19 |
2 files changed, 27 insertions, 5 deletions
diff --git a/arch/x86/kernel/apic.c b/arch/x86/kernel/apic.c index 784116933c70..1f48bd1c9f2d 100644 --- a/arch/x86/kernel/apic.c +++ b/arch/x86/kernel/apic.c @@ -1360,7 +1360,12 @@ void enable_IR_x2apic(void) local_irq_save(flags); mask_8259A(); - save_mask_IO_APIC_setup(); + + ret = save_mask_IO_APIC_setup(); + if (ret) { + printk(KERN_INFO "Saving IO-APIC state failed: %d\n", ret); + goto end; + } ret = enable_intr_remapping(1); @@ -1370,14 +1375,15 @@ void enable_IR_x2apic(void) } if (ret) - goto end; + goto end_restore; if (!x2apic) { x2apic = 1; apic_ops = &x2apic_ops; enable_x2apic(); } -end: + +end_restore: if (ret) /* * IR enabling failed @@ -1386,6 +1392,7 @@ end: else reinit_intr_remapped_IO_APIC(x2apic_preenabled); +end: unmask_8259A(); local_irq_restore(flags); diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c index 01419fdc1d5d..4cc9cb64c811 100644 --- a/arch/x86/kernel/io_apic.c +++ b/arch/x86/kernel/io_apic.c @@ -812,7 +812,7 @@ int save_mask_IO_APIC_setup(void) kzalloc(sizeof(struct IO_APIC_route_entry) * nr_ioapic_registers[apic], GFP_KERNEL); if (!early_ioapic_entries[apic]) - return -ENOMEM; + goto nomem; } for (apic = 0; apic < nr_ioapics; apic++) @@ -826,17 +826,32 @@ int save_mask_IO_APIC_setup(void) ioapic_write_entry(apic, pin, entry); } } + return 0; + +nomem: + for (; apic > 0; apic--) + kfree(early_ioapic_entries[apic]); + kfree(early_ioapic_entries[apic]); + memset(early_ioapic_entries, 0, + ARRAY_SIZE(early_ioapic_entries)); + + return -ENOMEM; } void restore_IO_APIC_setup(void) { int apic, pin; - for (apic = 0; apic < nr_ioapics; apic++) + for (apic = 0; apic < nr_ioapics; apic++) { + if (!early_ioapic_entries[apic]) + break; for (pin = 0; pin < nr_ioapic_registers[apic]; pin++) ioapic_write_entry(apic, pin, early_ioapic_entries[apic][pin]); + kfree(early_ioapic_entries[apic]); + early_ioapic_entries[apic] = NULL; + } } void reinit_intr_remapped_IO_APIC(int intr_remapping) |