[PATCH 1/2] wait: add parentheses to "state" argument in macro

[Winston Wen]

Now if we use macro wait_event_state() like this:

        wait_event_state(waitq, condition,
                        TASK_KILLABLE|TASK_FREEZABLE);

we'll get a build warning in __wait_is_interruptible because of:

        ((state) & (TASK_INTERRUPTIBLE | TASK_WAKEKILL)))

Parenthesise the use of "state" argument to avoid this warning as
it's very common to use "TASK_*|TASK_*" as function parameter in kernel.

Signed-off-by: Winston Wen <wentao@xxxxxxxxxxxxx>
---
 include/linux/wait.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/wait.h b/include/linux/wait.h
index 8aa3372f21a0..a4e57865aded 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -280,7 +280,7 @@ static inline void wake_up_pollfree(struct wait_queue_head *wq_head)
 
 #define ___wait_is_interruptible(state)						\
 	(!__builtin_constant_p(state) ||					\
-	 (state & (TASK_INTERRUPTIBLE | TASK_WAKEKILL)))
+	 ((state) & (TASK_INTERRUPTIBLE | TASK_WAKEKILL)))
 
 extern void init_wait_entry(struct wait_queue_entry *wq_entry, int flags);
 
-- 
2.43.0


--MP_/EEmQMRzKmMSEPIz7proBNED--