diff options
Diffstat (limited to 'drivers/tty/serial/8250/8250_pcilib.c')
| -rw-r--r-- | drivers/tty/serial/8250/8250_pcilib.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/tty/serial/8250/8250_pcilib.c b/drivers/tty/serial/8250/8250_pcilib.c index d234e9194feb..d8d0ae0d7238 100644 --- a/drivers/tty/serial/8250/8250_pcilib.c +++ b/drivers/tty/serial/8250/8250_pcilib.c @@ -12,6 +12,15 @@ #include "8250.h" #include "8250_pcilib.h" +int serial_8250_warn_need_ioport(struct pci_dev *dev) +{ + dev_warn(&dev->dev, + "Serial port not supported because of missing I/O resource\n"); + + return -ENXIO; +} +EXPORT_SYMBOL_NS_GPL(serial_8250_warn_need_ioport, "SERIAL_8250_PCI"); + int serial8250_pci_setup_port(struct pci_dev *dev, struct uart_8250_port *port, u8 bar, unsigned int offset, int regshift) { @@ -27,14 +36,17 @@ int serial8250_pci_setup_port(struct pci_dev *dev, struct uart_8250_port *port, port->port.mapbase = pci_resource_start(dev, bar) + offset; port->port.membase = pcim_iomap_table(dev)[bar] + offset; port->port.regshift = regshift; - } else { + } else if (IS_ENABLED(CONFIG_HAS_IOPORT)) { port->port.iotype = UPIO_PORT; port->port.iobase = pci_resource_start(dev, bar) + offset; port->port.mapbase = 0; port->port.membase = NULL; port->port.regshift = 0; + } else { + return serial_8250_warn_need_ioport(dev); } return 0; } -EXPORT_SYMBOL_NS_GPL(serial8250_pci_setup_port, SERIAL_8250_PCI); +EXPORT_SYMBOL_NS_GPL(serial8250_pci_setup_port, "SERIAL_8250_PCI"); +MODULE_DESCRIPTION("8250 PCI library"); MODULE_LICENSE("GPL"); |