diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2019-03-25 13:49:16 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-03-26 11:42:11 -0700 |
| commit | 047a013f8d0af8299ce2d02af152de6a30165ccc (patch) | |
| tree | 0fd0596b70fb60184269099c8765399614ecd053 | |
| parent | c493b09b2792336f471d2206be180a4b4c1fc9ba (diff) | |
chelsio: use BUG() instead of BUG_ON(1)
clang warns about possible bugs in a dead code branch after
BUG_ON(1) when CONFIG_PROFILE_ALL_BRANCHES is enabled:
drivers/net/ethernet/chelsio/cxgb4/sge.c:479:3: error: variable 'buf_size' is used uninitialized whenever 'if'
condition is false [-Werror,-Wsometimes-uninitialized]
BUG_ON(1);
^~~~~~~~~
include/asm-generic/bug.h:61:36: note: expanded from macro 'BUG_ON'
#define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0)
^~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:48:23: note: expanded from macro 'unlikely'
# define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x)))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/chelsio/cxgb4/sge.c:482:9: note: uninitialized use occurs here
return buf_size;
^~~~~~~~
drivers/net/ethernet/chelsio/cxgb4/sge.c:479:3: note: remove the 'if' if its condition is always true
BUG_ON(1);
^
include/asm-generic/bug.h:61:32: note: expanded from macro 'BUG_ON'
#define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0)
^
drivers/net/ethernet/chelsio/cxgb4/sge.c:459:14: note: initialize the variable 'buf_size' to silence this warning
int buf_size;
^
= 0
Use BUG() here to create simpler code that clang understands
correctly.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/sge.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c index 3130b43bba52..02959035ed3f 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c @@ -2620,7 +2620,7 @@ static inline struct port_info *ethqset2pinfo(struct adapter *adap, int qset) } /* should never happen! */ - BUG_ON(1); + BUG(); return NULL; } diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c index 88773ca58e6b..b3da81e90132 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c @@ -476,7 +476,7 @@ static inline int get_buf_size(struct adapter *adapter, break; default: - BUG_ON(1); + BUG(); } return buf_size; |