x86, ioapic: Remove duplicate code for saving/restoring RTEs

Code flow for enabling interrupt-remapping has its own routines
for saving and restoring io-apic RTE's. ioapic suspend/resume
code flow also has similar routines. Remove the duplicate code.

Tested-by: Daniel J Blueman <daniel.blueman@gmail.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Link: http://lkml.kernel.org/r/20110518233157.673130611@sbsiddha-MOBL3.sc.intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 5 insertions, 31 deletions

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 08b794d07a52..4fc544dcf7f1 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -2887,37 +2887,11 @@ static int __init io_apic_bug_finalize(void)
 
 late_initcall(io_apic_bug_finalize);
 
-static void suspend_ioapic(int ioapic_id)
+static void resume_ioapic_id(int ioapic_id)
 {
-        struct IO_APIC_route_entry *saved_data = ioapic_saved_data[ioapic_id];
-        int i;
-
-        if (!saved_data)
-                return;
-
-        for (i = 0; i < nr_ioapic_registers[ioapic_id]; i++)
-                saved_data[i] = ioapic_read_entry(ioapic_id, i);
-}
-
-static int ioapic_suspend(void)
-{
-        int ioapic_id;
-
-        for (ioapic_id = 0; ioapic_id < nr_ioapics; ioapic_id++)
-                suspend_ioapic(ioapic_id);
-
-        return 0;
-}
-
-static void resume_ioapic(int ioapic_id)
-{
-        struct IO_APIC_route_entry *saved_data = ioapic_saved_data[ioapic_id];
         unsigned long flags;
         union IO_APIC_reg_00 reg_00;
-        int i;
 
-        if (!saved_data)
-                return;
 
         raw_spin_lock_irqsave(&ioapic_lock, flags);
         reg_00.raw = io_apic_read(ioapic_id, 0);
@@ -2926,8 +2900,6 @@ static void resume_ioapic(int ioapic_id)
                 io_apic_write(ioapic_id, 0, reg_00.raw);
         }
         raw_spin_unlock_irqrestore(&ioapic_lock, flags);
-        for (i = 0; i < nr_ioapic_registers[ioapic_id]; i++)
-                ioapic_write_entry(ioapic_id, i, saved_data[i]);
 }
 
 static void ioapic_resume(void)
@@ -2935,11 +2907,13 @@ static void ioapic_resume(void)
         int ioapic_id;
 
         for (ioapic_id = nr_ioapics - 1; ioapic_id >= 0; ioapic_id--)
-                resume_ioapic(ioapic_id);
+                resume_ioapic_id(ioapic_id);
+
+        restore_ioapic_entries();
 }
 
 static struct syscore_ops ioapic_syscore_ops = {
-        .suspend = ioapic_suspend,
+        .suspend = save_ioapic_entries,
         .resume = ioapic_resume,
 };