diff options
Diffstat (limited to 'drivers/thunderbolt/switch.c')
| -rw-r--r-- | drivers/thunderbolt/switch.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c index ecd41f7b7649..00aec2124f79 100644 --- a/drivers/thunderbolt/switch.c +++ b/drivers/thunderbolt/switch.c @@ -731,6 +731,20 @@ struct tb_port *tb_next_port_on_path(struct tb_port *start, struct tb_port *end, } /** + * tb_pci_port_is_enabled() - Is the PCIe adapter port enabled + * @port: PCIe port to check + */ +bool tb_pci_port_is_enabled(struct tb_port *port) +{ + u32 data; + + if (tb_port_read(port, &data, TB_CFG_PORT, port->cap_adap, 1)) + return false; + + return !!(data & TB_PCI_EN); +} + +/** * tb_pci_port_enable() - Enable PCIe adapter port * @port: PCIe port to enable * @enable: Enable/disable the PCIe adapter |