X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=include%2Flinux%2Fwait.h;h=fcc968087f05ac889f7490ff79da4333051a57f3;hb=8dcc0f0451fde4c768feb0aa3a7b599167cf600b;hp=ec099b03e11b654e4558dd814e4a373deff13238;hpb=723000c9551d926fb34bc5135512779e3ea5d5d8;p=karo-tx-linux.git

diff --git a/include/linux/wait.h b/include/linux/wait.h
index ec099b03e11b..fcc968087f05 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -278,6 +278,42 @@ do {									\
 	__ret;								\
 })
 
+#define __wait_event_cmd(wq, condition, cmd1, cmd2)			\
+do {									\
+	DEFINE_WAIT(__wait);						\
+									\
+	for (;;) {							\
+		prepare_to_wait(&wq, &__wait, TASK_UNINTERRUPTIBLE);	\
+		if (condition)						\
+			break;						\
+		cmd1;							\
+		schedule();						\
+		cmd2;							\
+	}								\
+	finish_wait(&wq, &__wait);					\
+} while (0)
+
+/**
+ * wait_event_cmd - sleep until a condition gets true
+ * @wq: the waitqueue to wait on
+ * @condition: a C expression for the event to wait for
+ * cmd1: the command will be executed before sleep
+ * cmd2: the command will be executed after sleep
+ *
+ * The process is put to sleep (TASK_UNINTERRUPTIBLE) until the
+ * @condition evaluates to true. The @condition is checked each time
+ * the waitqueue @wq is woken up.
+ *
+ * wake_up() has to be called after changing any variable that could
+ * change the result of the wait condition.
+ */
+#define wait_event_cmd(wq, condition, cmd1, cmd2)			\
+do {									\
+	if (condition)							\
+		break;							\
+	__wait_event_cmd(wq, condition, cmd1, cmd2);			\
+} while (0)
+
 #define __wait_event_interruptible(wq, condition)			\
 	___wait_event(wq, condition, TASK_INTERRUPTIBLE, 0, 0,		\
 		      schedule())
@@ -732,7 +768,7 @@ do {									\
 	int __ret = 0;							\
 	if (!(condition))						\
 		__ret = __wait_event_interruptible_lock_irq(wq,		\
-						condition, lock,)	\
+						condition, lock,);	\
 	__ret;								\
 })