[PATCH] i386: revert i386-fix-the-verify_quirk_intel_irqbalance

This is unneeded with Ingo's genapic rework.

Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Andi Kleen <ak@suse.de>

1 files changed, 4 insertions, 29 deletions

diff --git a/arch/i386/kernel/quirks.c b/arch/i386/kernel/quirks.c
index 34874c398b44..a01320a7b636 100644
--- a/arch/i386/kernel/quirks.c
+++ b/arch/i386/kernel/quirks.c
@@ -10,38 +10,13 @@
 #if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_SMP) && defined(CONFIG_PCI)
 static void __devinit verify_quirk_intel_irqbalance(struct pci_dev *dev)
 {
-        u8 config, rev;
-        u32 word;
-
-        /* BIOS may enable hardware IRQ balancing for
-         * E7520/E7320/E7525(revision ID 0x9 and below)
-         * based platforms.
-         * For those platforms, make sure that the genapic is set to 'flat'
-         */
-        pci_read_config_byte(dev, PCI_CLASS_REVISION, &rev);
-        if (rev > 0x9)
-                return;
-
-        /* enable access to config space*/
-        pci_read_config_byte(dev, 0xf4, &config);
-        pci_write_config_byte(dev, 0xf4, config|0x2);
-
-        /* read xTPR register */
-        raw_pci_ops->read(0, 0, 0x40, 0x4c, 2, &word);
-
-        if (!(word & (1 << 13))) {
 #ifdef CONFIG_X86_64
-                if (genapic !=  &apic_flat)
-                        panic("APIC mode must be flat on this system\n");
+        if (genapic !=  &apic_flat)
+                panic("APIC mode must be flat on this system\n");
 #elif defined(CONFIG_X86_GENERICARCH)
-                if (genapic != &apic_default)
-                        panic("APIC mode must be default(flat) on this system. Use apic=default\n");
+        if (genapic != &apic_default)
+                panic("APIC mode must be default(flat) on this system. Use apic=default\n");
 #endif
-        }
-
-        /* put back the original value for config space*/
-        if (!(config & 0x2))
-                pci_write_config_byte(dev, 0xf4, config);
 }
 
 void __init quirk_intel_irqbalance(void)