PCI: add boot interrupt reroute DMI-quirk for ASUS M2N-LR

The ASUS M2N-LR should not trigger boot interrupt quirks although it carries an Intel 6702PXH. On this board the boot interrupt quirks cause incorrect IRQ assignments and should be disabled.

Fixes:
https://bugzilla.kernel.org/show_bug.cgi?id=43074

Signed-off-by Stefan Assmann <[email protected]>

---
 drivers/pci/quirks.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

drivers/pci/quirks.c +23 -0

index 6736836..f23ad20 100644
@@ -1685,6 +1685,28 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x260a, quirk_intel_pcie_pm);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x260b, quirk_intel_pcie_pm);
 
 #ifdef CONFIG_X86_IO_APIC
+static int dmi_disable_ioapicreroute(const struct dmi_system_id *d)
+{
+	noioapicreroute = 1;
+	pr_info("%s detected: disable boot interrupt reroute\n", d->ident);
+
+	return 0;
+}
+static struct dmi_system_id boot_interrupt_dmi_table[] = {
+	/*
+	 * Systems to exclude from boot interrupt reroute quirks
+	 */
+	{
+		.callback = dmi_disable_ioapicreroute,
+		.ident = "ASUSTek Computer INC. M2N-LR",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTek Computer INC."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "M2N-LR"),
+		},
+	},
+	{}
+};
+
 /*
  * Boot interrupts on some chipsets cannot be turned off. For these chipsets,
  * remap the original interrupt in the linux kernel to the boot interrupt, so

@@ -1693,6 +1715,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL,	0x260b, quirk_intel_pcie_pm);
  */
 static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev)
 {
+	dmi_check_system(boot_interrupt_dmi_table);
 	if (noioapicquirk || noioapicreroute)
 		return;
 

Signature · 1 line

2.9.3