spi_s3c24xx: use resource_size() to get resource size

Change the use of (res->end - res->start) to use resource_size() to
get the size of the resource.

Signed-off-by; Ben Dooks <ben@simtec.co.uk>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/spi/spi_s3c24xx.c b/drivers/spi/spi_s3c24xx.c
index 0be4da0917e0fecaba85dfeeb1d91c9ecc81bd9d..705841fb4ca06c485f262ee0874079b333545dfb 100644 (file)
--- a/drivers/spi/spi_s3c24xx.c
+++ b/drivers/spi/spi_s3c24xx.c
@@ -299,7 +299,7 @@ static int __init s3c24xx_spi_probe(struct platform_device *pdev)
                goto err_no_iores;
        }
 
-       hw->ioarea = request_mem_region(res->start, (res->end - res->start)+1,
+       hw->ioarea = request_mem_region(res->start, resource_size(res),
                                        pdev->name);
 
        if (hw->ioarea == NULL) {
@@ -308,7 +308,7 @@ static int __init s3c24xx_spi_probe(struct platform_device *pdev)
                goto err_no_iores;
        }
 
-       hw->regs = ioremap(res->start, (res->end - res->start)+1);
+       hw->regs = ioremap(res->start, resource_size(res));
        if (hw->regs == NULL) {
                dev_err(&pdev->dev, "Cannot map IO\n");
                err = -ENXIO;