rm9k_wdt.c: use resource_size()

[H Hartley Sweeten]

Use resource_size().

Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Wim Van Sebroeck <wim@xxxxxxxxx>
Cc: Henrique de Moraes Holschuh <hmh@xxxxxxxxxx>
Cc: Ming Lei <tom.leiming@xxxxxxxxx>

---

diff --git a/drivers/watchdog/rm9k_wdt.c b/drivers/watchdog/rm9k_wdt.c
index bb66958..198f748 100644
--- a/drivers/watchdog/rm9k_wdt.c
+++ b/drivers/watchdog/rm9k_wdt.c
@@ -360,7 +360,7 @@ static int __devinit wdt_gpi_probe(struct platform_device *pdv)
 	if (unlikely(!rr || !ri || !rc))
 		return -ENXIO;
 
-	wd_regs = ioremap_nocache(rr->start, rr->end + 1 - rr->start);
+	wd_regs = ioremap_nocache(rr->start, resource_size(rr));
 	if (unlikely(!wd_regs))
 		return -ENOMEM;
 	wd_irq = ri->start; 
--
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