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[ARM] 4998/1: <IMX UART>: do not use hardcoded io space size 

Do not use hardcoded io space size. Instead use the information provided
by the resource.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Sascha Hauer 2008-04-17 08:47:32 +01:00 committed by Russell King
parent 789d52589a
commit 3d454446e2
1 changed files with 15 additions and 10 deletions
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25
drivers/serial/imx.c
View File

@ -166,11 +166,6 @@
#define SERIAL_IMX_MAJOR 204
#define MINOR_START 41
/*
* This is the size of our serial port register set.
*/
#define UART_PORT_SIZE 0x100
/*
* This determines how often we check the modem status signals
* for any change. They generally aren't connected to an IRQ
@ -721,9 +716,11 @@ static const char *imx_type(struct uart_port *port)
*/
static void imx_release_port(struct uart_port *port)
{
struct imx_port *sport = (struct imx_port *)port;
struct platform_device *pdev = to_platform_device(port->dev);
struct resource *mmres;
release_mem_region(sport->port.mapbase, UART_PORT_SIZE);
mmres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(mmres->start, mmres->end - mmres->start + 1);
}
/*
@ -731,10 +728,18 @@ static void imx_release_port(struct uart_port *port)
*/
static int imx_request_port(struct uart_port *port)
{
struct imx_port *sport = (struct imx_port *)port;
struct platform_device *pdev = to_platform_device(port->dev);
struct resource *mmres;
void *ret;
return request_mem_region(sport->port.mapbase, UART_PORT_SIZE,
"imx-uart") != NULL ? 0 : -EBUSY;
mmres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!mmres)
return -ENODEV;
ret = request_mem_region(mmres->start, mmres->end - mmres->start + 1,
"imx-uart");
return ret ? 0 : -EBUSY;
}
/*