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authorJulia Lawall <julia@diku.dk>2009-08-06 16:05:08 -0700
committerJeff Garzik <jgarzik@redhat.com>2009-09-11 02:25:58 -0400
commit041b5eac254107cd3ba60034c38a411531cc64ee (patch)
treea1abcfd2b97985ca06504c493fda9cd4123307aa /drivers/ata/pata_platform.c
parentf90f613c3ed7381209de8aa36458442b5130170b (diff)
drivers/ata: use resource_size
Use the function resource_size, which reduces the chance of introducing off-by-one errors in calculating the resource size. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ struct resource *res; @@ - (res->end - res->start) + 1 + resource_size(res) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/pata_platform.c')
-rw-r--r--drivers/ata/pata_platform.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/ata/pata_platform.c b/drivers/ata/pata_platform.c
index d8d743af322..3f6ebc6c665 100644
--- a/drivers/ata/pata_platform.c
+++ b/drivers/ata/pata_platform.c
@@ -151,14 +151,14 @@ int __devinit __pata_platform_probe(struct device *dev,
*/
if (mmio) {
ap->ioaddr.cmd_addr = devm_ioremap(dev, io_res->start,
- io_res->end - io_res->start + 1);
+ resource_size(io_res));
ap->ioaddr.ctl_addr = devm_ioremap(dev, ctl_res->start,
- ctl_res->end - ctl_res->start + 1);
+ resource_size(ctl_res));
} else {
ap->ioaddr.cmd_addr = devm_ioport_map(dev, io_res->start,
- io_res->end - io_res->start + 1);
+ resource_size(io_res));
ap->ioaddr.ctl_addr = devm_ioport_map(dev, ctl_res->start,
- ctl_res->end - ctl_res->start + 1);
+ resource_size(ctl_res));
}
if (!ap->ioaddr.cmd_addr || !ap->ioaddr.ctl_addr) {
dev_err(dev, "failed to map IO/CTL base\n");