PCI PM: Make it possible to force using INTx for PCIe PME signaling

[safe/jmp/linux-2.6] / drivers / pci / pcie / portdrv_pci.c

diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c
index 13c8972..127e8f1 100644 (file)
--- a/drivers/pci/pcie/portdrv_pci.c
+++ b/drivers/pci/pcie/portdrv_pci.c
@@ -15,6 +15,7 @@
 #include <linux/slab.h>
 #include <linux/pcieport_if.h>
 #include <linux/aer.h>
+#include <linux/dmi.h>
 
 #include "portdrv.h"
 #include "aer/aerdrv.h"
@@ -273,10 +274,36 @@ static struct pci_driver pcie_portdriver = {
        .driver.pm      = PCIE_PORTDRV_PM_OPS,
 };
 
+static int __init dmi_pcie_pme_disable_msi(const struct dmi_system_id *d)
+{
+       pr_notice("%s detected: will not use MSI for PCIe PME signaling\n",
+                       d->ident);
+       pcie_pme_disable_msi();
+       return 0;
+}
+
+static struct dmi_system_id __initdata pcie_portdrv_dmi_table[] = {
+       /*
+        * Boxes that should not use MSI for PCIe PME signaling.
+        */
+       {
+        .callback = dmi_pcie_pme_disable_msi,
+        .ident = "MSI Wind U-100",
+        .matches = {
+                    DMI_MATCH(DMI_SYS_VENDOR,
+                               "MICRO-STAR INTERNATIONAL CO., LTD"),
+                    DMI_MATCH(DMI_PRODUCT_NAME, "U-100"),
+                    },
+        },
+        {}
+};
+
 static int __init pcie_portdrv_init(void)
 {
        int retval;
 
+       dmi_check_system(pcie_portdrv_dmi_table);
+
        retval = pcie_port_bus_register();
        if (retval) {
                printk(KERN_WARNING "PCIE: bus_register error: %d\n", retval);