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USB: gadget: imx_udc: Use resource size

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Use the resource_size function instead of manually calculating the
resource size. This reduces the chance of introducing off-by-one errors.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Tobias Klauser 2009-09-18 09:14:46 +02:00 committed by Greg Kroah-Hartman
parent 2f13612a86
commit d86a83f4ac
1 changed files with 4 additions and 4 deletions
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8
drivers/usb/gadget/imx_udc.c
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@ -1402,7 +1402,8 @@ static int __init imx_udc_probe(struct platform_device *pdev)
struct clk *clk;
void __iomem *base;
int ret = 0;
int i, res_size;
int i;
resource_size_t res_size;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
@ -1416,7 +1417,7 @@ static int __init imx_udc_probe(struct platform_device *pdev)
return -ENODEV;
}
res_size = res->end - res->start + 1;
res_size = resource_size(res);
if (!request_mem_region(res->start, res_size, res->name)) {
dev_err(&pdev->dev, "can't allocate %d bytes at %d address\n",
res_size, res->start);
@ -1527,8 +1528,7 @@ static int __exit imx_udc_remove(struct platform_device *pdev)
clk_disable(imx_usb->clk);
iounmap(imx_usb->base);
release_mem_region(imx_usb->res->start,
imx_usb->res->end - imx_usb->res->start + 1);
release_mem_region(imx_usb->res->start, resource_size(imx_usb->res));
if (pdata->exit)
pdata->exit(&pdev->dev);