diff options
| author | Dan Carpenter <error27@gmail.com> | 2010-11-12 01:05:07 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-11-12 18:55:30 +0300 |
| commit | 88cf81fc8944a6892db104caaa490885d48b959c (patch) | |
| tree | 47d5577fce949c58f2d69fdde549ba76e69ce770 /drivers/rapidio/rio.c | |
| parent | 38b7a2ae0ad3e29e1881b82c0f421ba5db148e3d (diff) | |
| download | linux-88cf81fc8944a6892db104caaa490885d48b959c.tar.xz | |
rapidio: use resource_size()
The size calculation is done incorrectly here because it should include
both the start and end (end - start + 1). It's easiest to just use
resource_size() which does the right thing.
I was worried there was something non-standard going on because the
printk() subtracts "end - 1", but the rest of the file uses the normal
resource size calculations. This function is only called from
fsl_rio_setup() in arch/powerpc/sysdev/fsl_rio.c and the calculation
there is also:
port->iores.start = law_start;
port->iores.end = law_start + law_size - 1;
So I think this is the correct fix.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Cc: Alexandre Bounine <alexandre.bounine@idt.com>
Acked-by: Li Yang <leoli@freescale.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rapidio/rio.c')
| -rw-r--r-- | drivers/rapidio/rio.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/rapidio/rio.c b/drivers/rapidio/rio.c index 68cf0c99138a..7b5080c45569 100644 --- a/drivers/rapidio/rio.c +++ b/drivers/rapidio/rio.c @@ -1159,11 +1159,11 @@ int __devinit rio_init_mports(void) list_for_each_entry(port, &rio_mports, node) { if (!request_mem_region(port->iores.start, - port->iores.end - port->iores.start, + resource_size(&port->iores), port->name)) { printk(KERN_ERR "RIO: Error requesting master port region 0x%016llx-0x%016llx\n", - (u64)port->iores.start, (u64)port->iores.end - 1); + (u64)port->iores.start, (u64)port->iores.end); rc = -ENOMEM; goto out; } |