[ARM] pxa: use resource_size() in pwm.c

Use resource_size for {request/release}_mem_region and ioremap.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

diff --git a/arch/arm/plat-pxa/pwm.c b/arch/arm/plat-pxa/pwm.c
index a9eabdcfa163b57cc8fdd27953b135cf61d98063..51dc5c8106c0cc84dd38aa89faf176f46303f019 100644 (file)
--- a/arch/arm/plat-pxa/pwm.c
+++ b/arch/arm/plat-pxa/pwm.c
@@ -204,14 +204,14 @@ static int __devinit pwm_probe(struct platform_device *pdev)
                goto err_free_clk;
        }
 
-       r = request_mem_region(r->start, r->end - r->start + 1, pdev->name);
+       r = request_mem_region(r->start, resource_size(r), pdev->name);
        if (r == NULL) {
                dev_err(&pdev->dev, "failed to request memory resource\n");
                ret = -EBUSY;
                goto err_free_clk;
        }
 
-       pwm->mmio_base = ioremap(r->start, r->end - r->start + 1);
+       pwm->mmio_base = ioremap(r->start, resource_size(r));
        if (pwm->mmio_base == NULL) {
                dev_err(&pdev->dev, "failed to ioremap() registers\n");
                ret = -ENODEV;
@@ -241,7 +241,7 @@ static int __devinit pwm_probe(struct platform_device *pdev)
        return 0;
 
 err_free_mem:
-       release_mem_region(r->start, r->end - r->start + 1);
+       release_mem_region(r->start, resource_size(r));
 err_free_clk:
        clk_put(pwm->clk);
 err_free:
@@ -271,7 +271,7 @@ static int __devexit pwm_remove(struct platform_device *pdev)
        iounmap(pwm->mmio_base);
 
        r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-       release_mem_region(r->start, r->end - r->start + 1);
+       release_mem_region(r->start, resource_size(r));
 
        clk_put(pwm->clk);
        kfree(pwm);