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cpmac: use resource_size() 

The original code is off by one because we should start counting at
zero.  So the size of the resource is end - start + 1.  I switched it to
use resource_size() to do the calculation.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2010-06-30 13:12:01 -07:00 committed by David S. Miller
parent 504f85c9d0
commit 7e307c7ad5
1 changed files with 4 additions and 4 deletions
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8
drivers/net/cpmac.c
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@ -964,7 +964,7 @@ static int cpmac_open(struct net_device *dev)
struct sk_buff *skb;
mem = platform_get_resource_byname(priv->pdev, IORESOURCE_MEM, "regs");
if (!request_mem_region(mem->start, mem->end - mem->start, dev->name)) {
if (!request_mem_region(mem->start, resource_size(mem), dev->name)) {
if (netif_msg_drv(priv))
printk(KERN_ERR "%s: failed to request registers\n",
dev->name);
@ -972,7 +972,7 @@ static int cpmac_open(struct net_device *dev)
goto fail_reserve;
}
priv->regs = ioremap(mem->start, mem->end - mem->start);
priv->regs = ioremap(mem->start, resource_size(mem));
if (!priv->regs) {
if (netif_msg_drv(priv))
printk(KERN_ERR "%s: failed to remap registers\n",
@ -1049,7 +1049,7 @@ fail_alloc:
iounmap(priv->regs);
fail_remap:
release_mem_region(mem->start, mem->end - mem->start);
release_mem_region(mem->start, resource_size(mem));
fail_reserve:
return res;
@ -1077,7 +1077,7 @@ static int cpmac_stop(struct net_device *dev)
free_irq(dev->irq, dev);
iounmap(priv->regs);
mem = platform_get_resource_byname(priv->pdev, IORESOURCE_MEM, "regs");
release_mem_region(mem->start, mem->end - mem->start);
release_mem_region(mem->start, resource_size(mem));
priv->rx_head = &priv->desc_ring[CPMAC_QUEUES];
for (i = 0; i < priv->ring_size; i++) {
if (priv->rx_head[i].skb) {