diff options
| -rw-r--r-- | drivers/serial/mpc52xx_uart.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index 7708e5dd3656..dbad0e31e005 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c @@ -338,14 +338,23 @@ mpc52xx_uart_release_port(struct uart_port *port) static int mpc52xx_uart_request_port(struct uart_port *port) { + int err; + if (port->flags & UPF_IOREMAP) /* Need to remap ? */ port->membase = ioremap(port->mapbase, MPC52xx_PSC_SIZE); if (!port->membase) return -EINVAL; - return request_mem_region(port->mapbase, MPC52xx_PSC_SIZE, + err = request_mem_region(port->mapbase, MPC52xx_PSC_SIZE, "mpc52xx_psc_uart") != NULL ? 0 : -EBUSY; + + if (err && (port->flags & UPF_IOREMAP)) { + iounmap(port->membase); + port->membase = NULL; + } + + return err; } static void |