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authorJiri Kosina <jkosina@suse.cz>2013-01-15 20:12:37 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2013-01-16 12:13:20 -0800
commite65b9ad222c280c031bc8d3642cc38dd3026fe06 (patch)
treee1156d88a4fb42d7623e0390469227b6e3f4202b
parent36e7a96ceb6e9d347d8bf3def689c315131edf10 (diff)
downloadlinux-stericsson-e65b9ad222c280c031bc8d3642cc38dd3026fe06.tar.gz
lockdep, rwsem: fix down_write_nest_lock() if !CONFIG_DEBUG_LOCK_ALLOC
Commit 1b963c81b145 ("lockdep, rwsem: provide down_write_nest_lock()") contains a bug in a codepath when CONFIG_DEBUG_LOCK_ALLOC is disabled, which causes down_read() to be called instead of down_write() by mistake on such configurations. Fix that. Reported-and-tested-by: Andrew Clayton <andrew@digital-domain.net> Reported-and-tested-by: Zlatko Calusic <zlatko.calusic@iskon.hr> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Reviewed-by: Rik van Riel <riel@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/linux/rwsem.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h
index 413cc11e414a..8da67d625e13 100644
--- a/include/linux/rwsem.h
+++ b/include/linux/rwsem.h
@@ -135,7 +135,7 @@ do { \
#else
# define down_read_nested(sem, subclass) down_read(sem)
-# define down_write_nest_lock(sem, nest_lock) down_read(sem)
+# define down_write_nest_lock(sem, nest_lock) down_write(sem)
# define down_write_nested(sem, subclass) down_write(sem)
#endif