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    Subject[PATCH] [1/35] i386: revert i386-fix-the-verify_quirk_intel_irqbalance
    Date

    From: Andrew Morton <akpm@osdl.org>

    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>

    ---

    arch/i386/kernel/quirks.c | 33 ++++-----------------------------
    1 file changed, 4 insertions(+), 29 deletions(-)

    Index: linux/arch/i386/kernel/quirks.c
    ===================================================================
    --- linux.orig/arch/i386/kernel/quirks.c
    +++ linux/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)
    -
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