1 files changed, 10 insertions, 59 deletions

diff --git a/arch/i386/kernel/quirks.c b/arch/i386/kernel/quirks.c
index 34874c398b44..9f6ab1789bb0 100644
--- a/arch/i386/kernel/quirks.c
+++ b/arch/i386/kernel/quirks.c
@@ -3,12 +3,10 @@
  */
 #include <linux/pci.h>
 #include <linux/irq.h>
-#include <asm/pci-direct.h>
-#include <asm/genapic.h>
-#include <asm/cpu.h>
 
 #if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_SMP) && defined(CONFIG_PCI)
-static void __devinit verify_quirk_intel_irqbalance(struct pci_dev *dev)
+
+static void __devinit quirk_intel_irqbalance(struct pci_dev *dev)
 {
         u8 config, rev;
         u32 word;
@@ -16,12 +14,14 @@ static void __devinit verify_quirk_intel_irqbalance(struct pci_dev *dev)
         /* 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'
+         * Disable SW irqbalance/affinity on those platforms.
          */
         pci_read_config_byte(dev, PCI_CLASS_REVISION, &rev);
         if (rev > 0x9)
                 return;
 
+        printk(KERN_INFO "Intel E7520/7320/7525 detected.");
+
         /* enable access to config space*/
         pci_read_config_byte(dev, 0xf4, &config);
         pci_write_config_byte(dev, 0xf4, config|0x2);
@@ -30,44 +30,6 @@ static void __devinit verify_quirk_intel_irqbalance(struct pci_dev *dev)
         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");
-#elif defined(CONFIG_X86_GENERICARCH)
-                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)
-{
-        u8 config, rev;
-        u32 word;
-
-        /* BIOS may enable hardware IRQ balancing for
-         * E7520/E7320/E7525(revision ID 0x9 and below)
-         * based platforms.
-         * Disable SW irqbalance/affinity on those platforms.
-         */
-        rev = read_pci_config_byte(0, 0, 0, PCI_CLASS_REVISION);
-        if (rev > 0x9)
-                return;
-
-        printk(KERN_INFO "Intel E7520/7320/7525 detected.");
-
-        /* enable access to config space */
-        config = read_pci_config_byte(0, 0, 0, 0xf4);
-        write_pci_config_byte(0, 0, 0, 0xf4, config|0x2);
-
-        /* read xTPR register */
-        word = read_pci_config_16(0, 0, 0x40, 0x4c);
-
-        if (!(word & (1 << 13))) {
                 printk(KERN_INFO "Disabling irq balancing and affinity\n");
 #ifdef CONFIG_IRQBALANCE
                 irqbalance_disable("");
@@ -76,24 +38,13 @@ void __init quirk_intel_irqbalance(void)
 #ifdef CONFIG_PROC_FS
                 no_irq_affinity = 1;
 #endif
-#ifdef CONFIG_HOTPLUG_CPU
-                printk(KERN_INFO "Disabling cpu hotplug control\n");
-                enable_cpu_hotplug = 0;
-#endif
-#ifdef CONFIG_X86_64
-                /* force the genapic selection to flat mode so that
-                 * interrupts can be redirected to more than one CPU.
-                 */
-                genapic_force = &apic_flat;
-#endif
         }
 
-        /* put back the original value for config space */
+        /* put back the original value for config space*/
         if (!(config & 0x2))
-                write_pci_config_byte(0, 0, 0, 0xf4, config);
+                pci_write_config_byte(dev, 0xf4, config);
 }
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_E7320_MCH,  verify_quirk_intel_irqbalance);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_E7525_MCH,  verify_quirk_intel_irqbalance);
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_E7520_MCH,  verify_quirk_intel_irqbalance);
-
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_E7320_MCH,  quirk_intel_irqbalance);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_E7525_MCH,  quirk_intel_irqbalance);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,    PCI_DEVICE_ID_INTEL_E7520_MCH,  quirk_intel_irqbalance);
 #endif