[PATCH] x86-64: Remove esr disable hack in APIC code

This was just needed for the Numasaurus, which fortunately
doesn't support x86-64 CPUs.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 20 deletions

diff --git a/arch/x86_64/kernel/apic.c b/arch/x86_64/kernel/apic.c
index 375d369570ca..9af0cc3e2ccc 100644
--- a/arch/x86_64/kernel/apic.c
+++ b/arch/x86_64/kernel/apic.c
@@ -325,14 +325,6 @@ void __cpuinit setup_local_APIC (void)
 {
         unsigned int value, ver, maxlvt;
 
-        /* Pound the ESR really hard over the head with a big hammer - mbligh */
-        if (esr_disable) {
-                apic_write(APIC_ESR, 0);
-                apic_write(APIC_ESR, 0);
-                apic_write(APIC_ESR, 0);
-                apic_write(APIC_ESR, 0);
-        }
-
         value = apic_read(APIC_LVR);
         ver = GET_APIC_VERSION(value);
 
@@ -434,7 +426,7 @@ void __cpuinit setup_local_APIC (void)
                 value |= APIC_LVT_LEVEL_TRIGGER;
         apic_write_around(APIC_LVT1, value);
 
-        if (APIC_INTEGRATED(ver) && !esr_disable) {             /* !82489DX */
+        {
                 unsigned oldvalue;
                 maxlvt = get_maxlvt();
                 if (maxlvt > 3)         /* Due to the Pentium erratum 3AP. */
@@ -452,17 +444,6 @@ void __cpuinit setup_local_APIC (void)
                         apic_printk(APIC_VERBOSE,
                         "ESR value after enabling vector: %08x, after %08x\n",
                         oldvalue, value);
-        } else {
-                if (esr_disable)        
-                        /* 
-                         * Something untraceble is creating bad interrupts on 
-                         * secondary quads ... for the moment, just leave the
-                         * ESR disabled - we can't do anything useful with the
-                         * errors anyway - mbligh
-                         */
-                        apic_printk(APIC_DEBUG, "Leaving ESR disabled.\n");
-                else 
-                        apic_printk(APIC_DEBUG, "No ESR for 82489DX.\n");
         }
 
         nmi_watchdog_default();