[PATCH 41/41] drivers: tty: serial: lpc32xx_hs: fill mapsize and use it

[Enrico Weigelt, metux IT consult]

Fill the struct uart_port->mapsize field and use it, insteaf of
hardcoded values in many places. This makes the code layout a bit
more consistent and easily allows using generic helpers for the
io memory handling.

Candidates for such helpers could be eg. the request+ioremap and
iounmap+release combinations.

Signed-off-by: Enrico Weigelt <i...@metux.net>
---
 drivers/tty/serial/lpc32xx_hs.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/tty/serial/lpc32xx_hs.c b/drivers/tty/serial/lpc32xx_hs.c
index f4e27d0..d1f09aa 100644
--- a/drivers/tty/serial/lpc32xx_hs.c
+++ b/drivers/tty/serial/lpc32xx_hs.c
@@ -579,7 +579,7 @@ static void serial_lpc32xx_release_port(struct uart_port 
*port)
                        port->membase = NULL;
                }
 
-               release_mem_region(port->mapbase, SZ_4K);
+               release_mem_region(port->mapbase, port->mapsize);
        }
 }
 
@@ -590,12 +590,15 @@ static int serial_lpc32xx_request_port(struct uart_port 
*port)
        if ((port->iotype == UPIO_MEM32) && (port->mapbase)) {
                ret = 0;
 
-               if (!request_mem_region(port->mapbase, SZ_4K, MODNAME))
+               if (!request_mem_region(port->mapbase,
+                                       port->mapsize, MODNAME))
                        ret = -EBUSY;
                else if (port->flags & UPF_IOREMAP) {
-                       port->membase = ioremap(port->mapbase, SZ_4K);
+                       port->membase = ioremap(port->mapbase,
+                                               port->mapsize);
                        if (!port->membase) {
-                               release_mem_region(port->mapbase, SZ_4K);
+                               release_mem_region(port->mapbase,
+                                                  port->mapsize);
                                ret = -ENOMEM;
                        }
                }
@@ -684,6 +687,7 @@ static int serial_hs_lpc32xx_probe(struct platform_device 
*pdev)
                return -ENXIO;
        }
        p->port.mapbase = res->start;
+       p->port.mapsize = SZ_4K;
        p->port.membase = NULL;
 
        ret = platform_get_irq(pdev, 0);
-- 
1.9.1