diff options
Diffstat (limited to 'drivers/pci/pcie/portdrv_pci.c')
| -rw-r--r-- | drivers/pci/pcie/portdrv_pci.c | 46 |
1 files changed, 36 insertions, 10 deletions
diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index a49452e2aed9..127e8f169d9c 100644 --- 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" @@ -24,7 +25,7 @@ */ #define DRIVER_VERSION "v1.0" #define DRIVER_AUTHOR "tom.l.nguyen@intel.com" -#define DRIVER_DESC "PCIE Port Bus Driver" +#define DRIVER_DESC "PCIe Port Bus Driver" MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); @@ -63,7 +64,7 @@ static const struct dev_pm_ops pcie_portdrv_pm_ops = { * pcie_portdrv_probe - Probe PCI-Express port devices * @dev: PCI-Express port device being probed * - * If detected invokes the pcie_port_device_register() method for + * If detected invokes the pcie_port_device_register() method for * this port device. * */ @@ -78,7 +79,7 @@ static int __devinit pcie_portdrv_probe(struct pci_dev *dev, (dev->pcie_type != PCI_EXP_TYPE_DOWNSTREAM))) return -ENODEV; - if (!dev->irq && dev->pin) { + if (!dev->irq && dev->pin) { dev_warn(&dev->dev, "device [%04x:%04x] has invalid IRQ; " "check vendor BIOS\n", dev->vendor, dev->device); } @@ -91,7 +92,7 @@ static int __devinit pcie_portdrv_probe(struct pci_dev *dev, return 0; } -static void pcie_portdrv_remove (struct pci_dev *dev) +static void pcie_portdrv_remove(struct pci_dev *dev) { pcie_port_device_remove(dev); pci_disable_device(dev); @@ -129,14 +130,13 @@ static int error_detected_iter(struct device *device, void *data) static pci_ers_result_t pcie_portdrv_error_detected(struct pci_dev *dev, enum pci_channel_state error) { - struct aer_broadcast_data result_data = - {error, PCI_ERS_RESULT_CAN_RECOVER}; - int retval; + struct aer_broadcast_data data = {error, PCI_ERS_RESULT_CAN_RECOVER}; + int ret; /* can not fail */ - retval = device_for_each_child(&dev->dev, &result_data, error_detected_iter); + ret = device_for_each_child(&dev->dev, &data, error_detected_iter); - return result_data.result; + return data.result; } static int mmio_enabled_iter(struct device *device, void *data) @@ -274,10 +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); @@ -290,7 +316,7 @@ static int __init pcie_portdrv_init(void) return retval; } -static void __exit pcie_portdrv_exit(void) +static void __exit pcie_portdrv_exit(void) { pci_unregister_driver(&pcie_portdriver); pcie_port_bus_unregister(); |