* [patch] stmmac: use resource_size()
@ 2010-04-07 9:35 Dan Carpenter
2010-04-08 4:50 ` David Miller
0 siblings, 1 reply; 5+ messages in thread
From: Dan Carpenter @ 2010-04-07 9:35 UTC (permalink / raw)
To: Giuseppe Cavallaro
Cc: Joe Perches, Tejun Heo, Christoph Lameter, netdev,
kernel-janitors, David S. Miller
Resource size should be calculated as end - start + 1 because we start
counting at zero. I changed the code to resource_size() to do the
calculation.
Signed-off-by: Dan Carpenter <error27@gmail.com>
diff --git a/drivers/net/stmmac/stmmac_main.c b/drivers/net/stmmac/stmmac_main.c
index a214a16..4111a85 100644
--- a/drivers/net/stmmac/stmmac_main.c
+++ b/drivers/net/stmmac/stmmac_main.c
@@ -1686,7 +1686,7 @@ static int stmmac_dvr_probe(struct platform_device *pdev)
}
pr_info("done!\n");
- if (!request_mem_region(res->start, (res->end - res->start),
+ if (!request_mem_region(res->start, resource_size(res),
pdev->name)) {
pr_err("%s: ERROR: memory allocation failed"
"cannot get the I/O addr 0x%x\n",
@@ -1695,9 +1695,9 @@ static int stmmac_dvr_probe(struct platform_device *pdev)
goto out;
}
- addr = ioremap(res->start, (res->end - res->start));
+ addr = ioremap(res->start, resource_size(res));
if (!addr) {
- pr_err("%s: ERROR: memory mapping failed \n", __func__);
+ pr_err("%s: ERROR: memory mapping failed\n", __func__);
ret = -ENOMEM;
goto out;
}
@@ -1775,7 +1775,7 @@ static int stmmac_dvr_probe(struct platform_device *pdev)
out:
if (ret < 0) {
platform_set_drvdata(pdev, NULL);
- release_mem_region(res->start, (res->end - res->start));
+ release_mem_region(res->start, resource_size(res));
if (addr != NULL)
iounmap(addr);
}
@@ -1813,7 +1813,7 @@ static int stmmac_dvr_remove(struct platform_device *pdev)
iounmap((void *)ndev->base_addr);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(res->start, (res->end - res->start));
+ release_mem_region(res->start, resource_size(res));
free_netdev(ndev);
^ permalink raw reply related [flat|nested] 5+ messages in thread* [patch] stmmac: use resource_size()
@ 2010-03-22 12:11 Dan Carpenter
2010-03-22 15:15 ` Giuseppe CAVALLARO
0 siblings, 1 reply; 5+ messages in thread
From: Dan Carpenter @ 2010-03-22 12:11 UTC (permalink / raw)
To: netdev
Cc: Giuseppe Cavallaro, Joe Perches, linux-kernel, kernel-janitors,
David S. Miller
The size calculation is not correct. It should be end - start + 1.
Use resource_size() to calculate it instead.
Signed-off-by: Dan Carpenter <error27@gmail.com>
diff --git a/drivers/net/stmmac/stmmac_main.c b/drivers/net/stmmac/stmmac_main.c
index a673361..92bef30 100644
--- a/drivers/net/stmmac/stmmac_main.c
+++ b/drivers/net/stmmac/stmmac_main.c
@@ -1685,8 +1685,7 @@ static int stmmac_dvr_probe(struct platform_device *pdev)
}
pr_info("done!\n");
- if (!request_mem_region(res->start, (res->end - res->start),
- pdev->name)) {
+ if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
pr_err("%s: ERROR: memory allocation failed"
"cannot get the I/O addr 0x%x\n",
__func__, (unsigned int)res->start);
@@ -1694,9 +1693,9 @@ static int stmmac_dvr_probe(struct platform_device *pdev)
goto out;
}
- addr = ioremap(res->start, (res->end - res->start));
+ addr = ioremap(res->start, resource_size(res));
if (!addr) {
- pr_err("%s: ERROR: memory mapping failed \n", __func__);
+ pr_err("%s: ERROR: memory mapping failed\n", __func__);
ret = -ENOMEM;
goto out;
}
@@ -1774,7 +1773,7 @@ static int stmmac_dvr_probe(struct platform_device *pdev)
out:
if (ret < 0) {
platform_set_drvdata(pdev, NULL);
- release_mem_region(res->start, (res->end - res->start));
+ release_mem_region(res->start, resource_size(res));
if (addr != NULL)
iounmap(addr);
}
@@ -1812,7 +1811,7 @@ static int stmmac_dvr_remove(struct platform_device *pdev)
iounmap((void *)ndev->base_addr);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(res->start, (res->end - res->start));
+ release_mem_region(res->start, resource_size(res));
free_netdev(ndev);
^ permalink raw reply related [flat|nested] 5+ messages in thread* Re: [patch] stmmac: use resource_size()
2010-03-22 12:11 Dan Carpenter
@ 2010-03-22 15:15 ` Giuseppe CAVALLARO
2010-03-23 1:33 ` David Miller
0 siblings, 1 reply; 5+ messages in thread
From: Giuseppe CAVALLARO @ 2010-03-22 15:15 UTC (permalink / raw)
To: Dan Carpenter, netdev, Joe Perches, linux-kernel, kernel-janitors,
David S. Miller
Hi Dan
Thanks, the patch can also applied against the net-next driver and it's ok.
Regards,
Giuseppe
Dan Carpenter wrote:
> The size calculation is not correct. It should be end - start + 1.
> Use resource_size() to calculate it instead.
>
> Signed-off-by: Dan Carpenter <error27@gmail.com>
>
> diff --git a/drivers/net/stmmac/stmmac_main.c b/drivers/net/stmmac/stmmac_main.c
> index a673361..92bef30 100644
> --- a/drivers/net/stmmac/stmmac_main.c
> +++ b/drivers/net/stmmac/stmmac_main.c
> @@ -1685,8 +1685,7 @@ static int stmmac_dvr_probe(struct platform_device *pdev)
> }
> pr_info("done!\n");
>
> - if (!request_mem_region(res->start, (res->end - res->start),
> - pdev->name)) {
> + if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
> pr_err("%s: ERROR: memory allocation failed"
> "cannot get the I/O addr 0x%x\n",
> __func__, (unsigned int)res->start);
> @@ -1694,9 +1693,9 @@ static int stmmac_dvr_probe(struct platform_device *pdev)
> goto out;
> }
>
> - addr = ioremap(res->start, (res->end - res->start));
> + addr = ioremap(res->start, resource_size(res));
> if (!addr) {
> - pr_err("%s: ERROR: memory mapping failed \n", __func__);
> + pr_err("%s: ERROR: memory mapping failed\n", __func__);
> ret = -ENOMEM;
> goto out;
> }
> @@ -1774,7 +1773,7 @@ static int stmmac_dvr_probe(struct platform_device *pdev)
> out:
> if (ret < 0) {
> platform_set_drvdata(pdev, NULL);
> - release_mem_region(res->start, (res->end - res->start));
> + release_mem_region(res->start, resource_size(res));
> if (addr != NULL)
> iounmap(addr);
> }
> @@ -1812,7 +1811,7 @@ static int stmmac_dvr_remove(struct platform_device *pdev)
>
> iounmap((void *)ndev->base_addr);
> res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> - release_mem_region(res->start, (res->end - res->start));
> + release_mem_region(res->start, resource_size(res));
>
> free_netdev(ndev);
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2010-04-08 4:50 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2010-04-07 9:35 [patch] stmmac: use resource_size() Dan Carpenter
2010-04-08 4:50 ` David Miller
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2010-03-22 12:11 Dan Carpenter
2010-03-22 15:15 ` Giuseppe CAVALLARO
2010-03-23 1:33 ` David Miller
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