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Diffstat (limited to 'arch/x86/kernel/io_apic.c')
-rw-r--r--arch/x86/kernel/io_apic.c19
1 files changed, 17 insertions, 2 deletions
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)