diff options
| author | Rafael J. Wysocki <rjw@sisk.pl> | 2010-08-21 03:51:44 +0400 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2010-08-25 00:43:15 +0400 |
| commit | 79dd9182db2072d63ccf160bb9a3463b1c952723 (patch) | |
| tree | 89069b3803a4e07924c6fd4414bbd2a771a432e9 /drivers/pci/pcie/portdrv_pci.c | |
| parent | f1a7bfaf6bb9cb195577e674c0ab2fd0a55d9014 (diff) | |
| download | linux-79dd9182db2072d63ccf160bb9a3463b1c952723.tar.xz | |
PCI: PCIe: Introduce commad line switch for disabling port services
Introduce kernel command line switch pcie_ports= allowing one to
disable all of the native PCIe port services, so that PCIe ports
are treated like PCI-to-PCI bridges.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/pcie/portdrv_pci.c')
| -rw-r--r-- | drivers/pci/pcie/portdrv_pci.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index 3debed25e46b..a04392da6ce1 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -29,6 +29,18 @@ MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); +/* If this switch is set, PCIe port native services should not be enabled. */ +bool pcie_ports_disabled; + +static int __init pcie_port_setup(char *str) +{ + if (!strncmp(str, "compat", 6)) + pcie_ports_disabled = true; + + return 1; +} +__setup("pcie_ports=", pcie_port_setup); + /* global data */ static int pcie_portdrv_restore_config(struct pci_dev *dev) @@ -301,6 +313,9 @@ static int __init pcie_portdrv_init(void) { int retval; + if (pcie_ports_disabled) + return -EACCES; + dmi_check_system(pcie_portdrv_dmi_table); retval = pcie_port_bus_register(); |