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serial: imx: Use devm_ioremap_resource() 

Use devm_ioremap_resource() in order to make the code simpler and
it gives proper codes on errors.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Alexander Shiyan 2014-02-22 16:01:33 +04:00 committed by Greg Kroah-Hartman
parent a9c3f68f3c
commit da82f99724
1 changed files with 4 additions and 40 deletions
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44
drivers/tty/serial/imx.c
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@ -1468,36 +1468,6 @@ static const char *imx_type(struct uart_port *port)
return sport->port.type == PORT_IMX ? "IMX" : NULL;
}
/*
* Release the memory region(s) being used by 'port'.
*/
static void imx_release_port(struct uart_port *port)
{
struct platform_device *pdev = to_platform_device(port->dev);
struct resource *mmres;
mmres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(mmres->start, resource_size(mmres));
}
/*
* Request the memory region(s) being used by 'port'.
*/
static int imx_request_port(struct uart_port *port)
{
struct platform_device *pdev = to_platform_device(port->dev);
struct resource *mmres;
void *ret;
mmres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!mmres)
return -ENODEV;
ret = request_mem_region(mmres->start, resource_size(mmres), "imx-uart");
return ret ? 0 : -EBUSY;
}
/*
* Configure/autoconfigure the port.
*/
@ -1505,8 +1475,7 @@ static void imx_config_port(struct uart_port *port, int flags)
{
struct imx_port *sport = (struct imx_port *)port;
if (flags & UART_CONFIG_TYPE &&
imx_request_port(&sport->port) == 0)
if (flags & UART_CONFIG_TYPE)
sport->port.type = PORT_IMX;
}
@ -1616,8 +1585,6 @@ static struct uart_ops imx_pops = {
.flush_buffer = imx_flush_buffer,
.set_termios = imx_set_termios,
.type = imx_type,
.release_port = imx_release_port,
.request_port = imx_request_port,
.config_port = imx_config_port,
.verify_port = imx_verify_port,
#if defined(CONFIG_CONSOLE_POLL)
@ -1950,12 +1917,9 @@ static int serial_imx_probe(struct platform_device *pdev)
return ret;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -ENODEV;
base = devm_ioremap(&pdev->dev, res->start, PAGE_SIZE);
if (!base)
return -ENOMEM;
base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(base))
return PTR_ERR(base);
sport->port.dev = &pdev->dev;
sport->port.mapbase = res->start;