diff options
-rw-r--r-- | include/asm-generic/bug.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h index f2d2faf4d9ae..e5a3f5880001 100644 --- a/include/asm-generic/bug.h +++ b/include/asm-generic/bug.h | |||
@@ -194,6 +194,13 @@ extern void warn_slowpath_null(const char *file, const int line); | |||
194 | #ifdef CONFIG_SMP | 194 | #ifdef CONFIG_SMP |
195 | # define WARN_ON_SMP(x) WARN_ON(x) | 195 | # define WARN_ON_SMP(x) WARN_ON(x) |
196 | #else | 196 | #else |
197 | /* | ||
198 | * Use of ({0;}) because WARN_ON_SMP(x) may be used either as | ||
199 | * a stand alone line statement or as a condition in an if () | ||
200 | * statement. | ||
201 | * A simple "0" would cause gcc to give a "statement has no effect" | ||
202 | * warning. | ||
203 | */ | ||
197 | # define WARN_ON_SMP(x) ({0;}) | 204 | # define WARN_ON_SMP(x) ({0;}) |
198 | #endif | 205 | #endif |
199 | 206 | ||