From: Randy Dunlap <randy.dunlap@oracle.com>

A 1-bit bitfield has no room for a sign bit.
drivers/cpuidle/governors/ladder.c:54:16: error: dubious bitfield without explicit `signed' or `unsigned'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/cpuidle/governors/ladder.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN drivers/cpuidle/governors/ladder.c~cpuidle-unsigned-bitfield drivers/cpuidle/governors/ladder.c
--- a/drivers/cpuidle/governors/ladder.c~cpuidle-unsigned-bitfield
+++ a/drivers/cpuidle/governors/ladder.c
@@ -51,7 +51,7 @@ struct ladder_device_state {
 
 struct ladder_device {
 	struct ladder_device_state states[CPUIDLE_STATE_MAX];
-	int bm_check:1;
+	unsigned int bm_check:1;
 	unsigned long bm_check_timestamp;
 	unsigned long bm_activity; /* FIXME: bm activity should be global */
 	int last_state_idx;
_