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authorIngo Molnar <mingo@elte.hu>2008-12-12 12:43:05 +0100
committerIngo Molnar <mingo@elte.hu>2008-12-12 12:43:05 +0100
commit81444a799550214f549caf579cf65a0ca55e70b7 (patch)
tree3288dac0740be2e1e7d1af4ee51d792a6e91edf3 /mm/backing-dev.c
parenta64d31baed104be25305e9c71585d3ea4ee9a418 (diff)
parentda485e0cb16726797e99a595a399b9fc721b91bc (diff)
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Merge branch 'tracing/fastboot' into cpus4096
Diffstat (limited to 'mm/backing-dev.c')
-rw-r--r--mm/backing-dev.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index f2e574d..2a56124 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -176,6 +176,9 @@ int bdi_register(struct backing_dev_info *bdi, struct device *parent,
int ret = 0;
struct device *dev;
+ if (WARN_ON(bdi->dev))
+ goto exit;
+
va_start(args, fmt);
dev = device_create_vargs(bdi_class, parent, MKDEV(0, 0), bdi, fmt, args);
va_end(args);