Merge branch 'linus' into x86/quirks
Conflicts:
arch/x86/kernel/early-quirks.c
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index c2ac1b4..eb875cd 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -1418,8 +1418,16 @@
*/
static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
{
- pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n", d->ident);
- acpi_skip_timer_override = 1;
+ /*
+ * The ati_ixp4x0_rev() early PCI quirk should have set
+ * the acpi_skip_timer_override flag already:
+ */
+ if (!acpi_skip_timer_override) {
+ WARN(1, KERN_ERR "ati_ixp4x0 quirk not complete.\n");
+ pr_notice("%s detected: Ignoring BIOS IRQ0 pin2 override\n",
+ d->ident);
+ acpi_skip_timer_override = 1;
+ }
return 0;
}
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 24bb5fa..733c4f8 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -95,6 +95,52 @@
}
+static u32 ati_ixp4x0_rev(int num, int slot, int func)
+{
+ u32 d;
+ u8 b;
+
+ b = read_pci_config_byte(num, slot, func, 0xac);
+ b &= ~(1<<5);
+ write_pci_config_byte(num, slot, func, 0xac, b);
+
+ d = read_pci_config(num, slot, func, 0x70);
+ d |= 1<<8;
+ write_pci_config(num, slot, func, 0x70, d);
+
+ d = read_pci_config(num, slot, func, 0x8);
+ d &= 0xff;
+ return d;
+}
+
+static void __init ati_bugs(int num, int slot, int func)
+{
+#if defined(CONFIG_ACPI) && defined (CONFIG_X86_IO_APIC)
+ u32 d;
+ u8 b;
+
+ if (acpi_use_timer_override)
+ return;
+
+ d = ati_ixp4x0_rev(num, slot, func);
+ if (d < 0x82)
+ acpi_skip_timer_override = 1;
+ else {
+ /* check for IRQ0 interrupt swap */
+ outb(0x72, 0xcd6); b = inb(0xcd7);
+ if (!(b & 0x2))
+ acpi_skip_timer_override = 1;
+ }
+
+ if (acpi_skip_timer_override) {
+ printk(KERN_INFO "SB4X0 revision 0x%x\n", d);
+ printk(KERN_INFO "Ignoring ACPI timer override.\n");
+ printk(KERN_INFO "If you got timer trouble "
+ "try acpi_use_timer_override\n");
+ }
+#endif
+}
+
#ifdef CONFIG_DMAR
static void __init intel_g33_dmar(int num, int slot, int func)
{
@@ -128,6 +174,8 @@
PCI_CLASS_BRIDGE_PCI, PCI_ANY_ID, QFLAG_APPLY_ONCE, via_bugs },
{ PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB,
PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, fix_hypertransport_config },
+ { PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_SMBUS,
+ PCI_CLASS_SERIAL_SMBUS, PCI_ANY_ID, 0, ati_bugs },
#ifdef CONFIG_DMAR
{ PCI_VENDOR_ID_INTEL, 0x29c0,
PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, intel_g33_dmar },