[PATCH] drivers: tty: serial: amba-pl011: use generic ops request/release port

[Enrico Weigelt, metux IT consult]

From: Enrico Weigelt <i...@metux.net>

Reduce boilerplate by using generic implementation of the trivial
request_port/release_port operations. For that to work, we have to
set the mapsize field accordingly.
---
 drivers/tty/serial/amba-pl011.c | 28 ++++++----------------------
 1 file changed, 6 insertions(+), 22 deletions(-)

diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index 5921a33..6b7c3c7 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -2094,30 +2094,13 @@ static const char *pl011_type(struct uart_port *port)
 }
 
 /*
- * Release the memory region(s) being used by 'port'
- */
-static void pl011_release_port(struct uart_port *port)
-{
-       release_mem_region(port->mapbase, SZ_4K);
-}
-
-/*
- * Request the memory region(s) being used by 'port'
- */
-static int pl011_request_port(struct uart_port *port)
-{
-       return request_mem_region(port->mapbase, SZ_4K, "uart-pl011")
-                       != NULL ? 0 : -EBUSY;
-}
-
-/*
  * Configure/autoconfigure the port.
  */
 static void pl011_config_port(struct uart_port *port, int flags)
 {
        if (flags & UART_CONFIG_TYPE) {
                port->type = PORT_AMBA;
-               pl011_request_port(port);
+               uart_defops_request_port(port);
        }
 }
 
@@ -2150,8 +2133,8 @@ static int pl011_verify_port(struct uart_port *port, 
struct serial_struct *ser)
        .flush_buffer   = pl011_dma_flush_buffer,
        .set_termios    = pl011_set_termios,
        .type           = pl011_type,
-       .release_port   = pl011_release_port,
-       .request_port   = pl011_request_port,
+       .release_port   = uart_defops_release_port,
+       .request_port   = uart_defops_request_port,
        .config_port    = pl011_config_port,
        .verify_port    = pl011_verify_port,
 #ifdef CONFIG_CONSOLE_POLL
@@ -2181,8 +2164,8 @@ static unsigned int sbsa_uart_get_mctrl(struct uart_port 
*port)
        .shutdown       = sbsa_uart_shutdown,
        .set_termios    = sbsa_uart_set_termios,
        .type           = pl011_type,
-       .release_port   = pl011_release_port,
-       .request_port   = pl011_request_port,
+       .release_port   = uart_defops_release_port,
+       .request_port   = uart_defops_request_port,
        .config_port    = pl011_config_port,
        .verify_port    = pl011_verify_port,
 #ifdef CONFIG_CONSOLE_POLL
@@ -2584,6 +2567,7 @@ static int pl011_setup_port(struct device *dev, struct 
uart_amba_port *uap,
        uap->port.dev = dev;
        uap->port.mapbase = mmiobase->start;
        uap->port.membase = base;
+       uap->port.mapsize = SZ_4K;
        uap->port.fifosize = uap->fifosize;
        uap->port.flags = UPF_BOOT_AUTOCONF;
        uap->port.line = index;
-- 
1.9.1