SM501: Fix missing uses of resource_size()

SM501: Fix missing uses of resource_size()

[Ben Dooks]

[-- Attachment #1: simtec/ready/sm501-use-resource-size.patch --]
[-- Type: text/plain, Size: 2075 bytes --]

There are several places in the SM501 fb driver that could do with using
resource_size() to calculate the size of a resource.

Also fix a bug where request_mem_region() is being passed one too few
bytes when requesting the register memory region, which was causing
the following in /proc/iomem:

 13e80000-13e8ffff : sm501-fb.0
   13e80000-13e8fffe : sm501-fb

fixed, this reads:

 13e80000-13e8ffff : sm501-fb.0
   13e80000-13e8ffff : sm501-fb

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: Simtec Linux Team <linux@simtec.co.uk>

---
 drivers/video/sm501fb.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

Index: b/drivers/video/sm501fb.c
===================================================================
--- a/drivers/video/sm501fb.c	2009-11-03 11:17:52.000000000 +0000
+++ b/drivers/video/sm501fb.c	2009-11-03 11:18:36.000000000 +0000
@@ -1338,7 +1338,7 @@ static int sm501fb_start(struct sm501fb_
 	}
 
 	info->regs_res = request_mem_region(res->start,
-					    res->end - res->start,
+					    resource_size(res),
 					    pdev->name);
 
 	if (info->regs_res == NULL) {
@@ -1347,7 +1347,7 @@ static int sm501fb_start(struct sm501fb_
 		goto err_release;
 	}
 
-	info->regs = ioremap(res->start, (res->end - res->start)+1);
+	info->regs = ioremap(res->start, resource_size(res));
 	if (info->regs == NULL) {
 		dev_err(dev, "cannot remap registers\n");
 		ret = -ENXIO;
@@ -1363,7 +1363,7 @@ static int sm501fb_start(struct sm501fb_
 	}
 
 	info->fbmem_res = request_mem_region(res->start,
-					     (res->end - res->start)+1,
+					     resource_size(res),
 					     pdev->name);
 	if (info->fbmem_res == NULL) {
 		dev_err(dev, "cannot claim framebuffer\n");
@@ -1377,7 +1377,7 @@ static int sm501fb_start(struct sm501fb_
 		goto err_mem_res;
 	}
 
-	info->fbmem_len = (res->end - res->start)+1;
+	info->fbmem_len = resource_size(res);
 
 	/* clear framebuffer memory - avoids garbage data on unused fb */
 	memset(info->fbmem, 0, info->fbmem_len);

-- 
Ben (ben@fluff.org, http://www.fluff.org/)

  'a smiley only costs 4 bytes'

Re: SM501: Fix missing uses of resource_size()

[Thiago Farina]

Could you attach the patch as a plain text in the body of email and
[PATCH] at the subject line?

Re: SM501: Fix missing uses of resource_size()

[Ben Dooks]

On Tue, Nov 10, 2009 at 03:36:05PM -0200, Thiago Farina wrote:
> Could you attach the patch as a plain text in the body of email and

quilt mail seems to work fine in my mailer.

[trimmed the cc: line]

-- 
Ben (ben@fluff.org, http://www.fluff.org/)

  'a smiley only costs 4 bytes'

Re: SM501: Fix missing uses of resource_size()

[Andres Salomon]

On Tue, 10 Nov 2009 17:17:34 +0000
Ben Dooks <ben@simtec.co.uk> wrote:

> There are several places in the SM501 fb driver that could do with
> using resource_size() to calculate the size of a resource.
> 

Yes, please!  Also, as Thiago suggested, please submit this inline.

[...]
> @@ -1363,7 +1363,7 @@ static int sm501fb_start(struct sm501fb_
>  	}
>  
>  	info->fbmem_res = request_mem_region(res->start,
> -					     (res->end -
> res->start)+1,
> +					     resource_size(res),
>  					     pdev->name);
>  	if (info->fbmem_res == NULL) {
>  		dev_err(dev, "cannot claim framebuffer\n");
> @@ -1377,7 +1377,7 @@ static int sm501fb_start(struct sm501fb_

Looks like you missed one here; the ioremap on line 1374 should also
use resource_size.


>  		goto err_mem_res;
>  	}
>  
> -	info->fbmem_len = (res->end - res->start)+1;
> +	info->fbmem_len = resource_size(res);
>  
>  	/* clear framebuffer memory - avoids garbage data on unused
> fb */ memset(info->fbmem, 0, info->fbmem_len);
> 

Re: SM501: Fix missing uses of resource_size()

[Ben Dooks]

On Tue, Nov 10, 2009 at 01:15:36PM -0500, Andres Salomon wrote:
> On Tue, 10 Nov 2009 17:17:34 +0000
> Ben Dooks <ben@simtec.co.uk> wrote:
> 
> > There are several places in the SM501 fb driver that could do with
> > using resource_size() to calculate the size of a resource.
> > 
> 
> Yes, please!  Also, as Thiago suggested, please submit this inline.

My mailer shows it in line. using quilt mail to send, and it says
that the content has been inlined.

> [...]
> > @@ -1363,7 +1363,7 @@ static int sm501fb_start(struct sm501fb_
> >  	}
> >  
> >  	info->fbmem_res = request_mem_region(res->start,
> > -					     (res->end -
> > res->start)+1,
> > +					     resource_size(res),
> >  					     pdev->name);
> >  	if (info->fbmem_res == NULL) {
> >  		dev_err(dev, "cannot claim framebuffer\n");
> > @@ -1377,7 +1377,7 @@ static int sm501fb_start(struct sm501fb_
> 
> Looks like you missed one here; the ioremap on line 1374 should also
> use resource_size.

thanks, fixed.

-- 
Ben (ben@fluff.org, http://www.fluff.org/)

  'a smiley only costs 4 bytes'