From: Dan Carpenter <error27@gmail.com>
To: Florian Fainelli <florian@openwrt.org>
Cc: "David S. Miller" <davem@davemloft.net>,
Jiri Pirko <jpirko@redhat.com>,
Eric Dumazet <eric.dumazet@gmail.com>,
netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] cpmac: use resource_size()
Date: Mon, 28 Jun 2010 21:19:33 +0000 [thread overview]
Message-ID: <20100628211933.GL19184@bicker> (raw)
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>
---
I don't have a cross compile environment, so I can't even compile test
this. Sorry.
diff --git a/drivers/net/cpmac.c b/drivers/net/cpmac.c
index 23786ee..38de1a4 100644
--- a/drivers/net/cpmac.c
+++ b/drivers/net/cpmac.c
@@ -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) {
WARNING: multiple messages have this Message-ID (diff)
From: Dan Carpenter <error27@gmail.com>
To: Florian Fainelli <florian@openwrt.org>
Cc: "David S. Miller" <davem@davemloft.net>,
Jiri Pirko <jpirko@redhat.com>,
Eric Dumazet <eric.dumazet@gmail.com>,
netdev@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: [patch] cpmac: use resource_size()
Date: Mon, 28 Jun 2010 23:19:33 +0200 [thread overview]
Message-ID: <20100628211933.GL19184@bicker> (raw)
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>
---
I don't have a cross compile environment, so I can't even compile test
this. Sorry.
diff --git a/drivers/net/cpmac.c b/drivers/net/cpmac.c
index 23786ee..38de1a4 100644
--- a/drivers/net/cpmac.c
+++ b/drivers/net/cpmac.c
@@ -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) {
next reply other threads:[~2010-06-28 21:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-28 21:19 Dan Carpenter [this message]
2010-06-28 21:19 ` [patch] cpmac: use resource_size() Dan Carpenter
2010-06-30 20:12 ` David Miller
2010-06-30 20:12 ` David Miller
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20100628211933.GL19184@bicker \
--to=error27@gmail.com \
--cc=davem@davemloft.net \
--cc=eric.dumazet@gmail.com \
--cc=florian@openwrt.org \
--cc=jpirko@redhat.com \
--cc=kernel-janitors@vger.kernel.org \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.