diff options
| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2008-10-15 22:05:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-16 11:21:51 -0700 |
| commit | c26ec88ea86ad5122a6ea5ad635e6a1f6c395d74 (patch) | |
| tree | 8e7e95851dc24327fbdb05c90b2eb0b40f60cadc /kernel | |
| parent | 923f7f6970bd448b8e88b9e4be10fd01fc7106a4 (diff) | |
resources: tidy __request_region()
No functional change. Just return NULL for kzalloc failure immediately,
rather than wrapping the whole function body in the body of an "if".
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/resource.c | 41 |
1 files changed, 21 insertions, 20 deletions
diff --git a/kernel/resource.c b/kernel/resource.c index 414d6fc9131..f193d6e3ded 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -630,33 +630,34 @@ struct resource * __request_region(struct resource *parent, { struct resource *res = kzalloc(sizeof(*res), GFP_KERNEL); - if (res) { - res->name = name; - res->start = start; - res->end = start + n - 1; - res->flags = IORESOURCE_BUSY; + if (!res) + return NULL; - write_lock(&resource_lock); + res->name = name; + res->start = start; + res->end = start + n - 1; + res->flags = IORESOURCE_BUSY; - for (;;) { - struct resource *conflict; + write_lock(&resource_lock); - conflict = __request_resource(parent, res); - if (!conflict) - break; - if (conflict != parent) { - parent = conflict; - if (!(conflict->flags & IORESOURCE_BUSY)) - continue; - } + for (;;) { + struct resource *conflict; - /* Uhhuh, that didn't work out.. */ - kfree(res); - res = NULL; + conflict = __request_resource(parent, res); + if (!conflict) break; + if (conflict != parent) { + parent = conflict; + if (!(conflict->flags & IORESOURCE_BUSY)) + continue; } - write_unlock(&resource_lock); + + /* Uhhuh, that didn't work out.. */ + kfree(res); + res = NULL; + break; } + write_unlock(&resource_lock); return res; } EXPORT_SYMBOL(__request_region); |