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authorBen Dooks <ben@simtec.co.uk>2009-12-15 16:46:33 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-16 07:20:02 -0800
commitd60f6c2ba86243a3bbc0c70508f71f84c5308f8e (patch)
tree9e700002d87305fe96c80d7caafa9dd4bf46cdcb /drivers/video/sm501fb.c
parentb689a9e8362ed909045f99517b735c7c60835f7c (diff)
downloadlinux-d60f6c2ba86243a3bbc0c70508f71f84c5308f8e.tar.gz
sm501: fix missing uses of resource_size()
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> Cc: Vincent Sanders <vince@simtec.co.uk> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/sm501fb.c')
-rw-r--r--drivers/video/sm501fb.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/video/sm501fb.c b/drivers/video/sm501fb.c
index 924d7946278..95be9e90e8b 100644
--- a/drivers/video/sm501fb.c
+++ b/drivers/video/sm501fb.c
@@ -1338,7 +1338,7 @@ static int sm501fb_start(struct sm501fb_info *info,
}
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_info *info,
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 *info,
}
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");
@@ -1371,13 +1371,13 @@ static int sm501fb_start(struct sm501fb_info *info,
goto err_regs_map;
}
- info->fbmem = ioremap(res->start, (res->end - res->start)+1);
+ info->fbmem = ioremap(res->start, resource_size(res));
if (info->fbmem == NULL) {
dev_err(dev, "cannot remap framebuffer\n");
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);