Add convenience macro for polling an event that does not have a
waitqueue.
Signed-off-by: Michal Suchanek <msuchanek@xxxxxxx>
---
include/linux/delay.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/include/linux/delay.h b/include/linux/delay.h
index b78bab4395d8..3ae9fa395628 100644
--- a/include/linux/delay.h
+++ b/include/linux/delay.h
@@ -64,4 +64,16 @@ static inline void ssleep(unsigned int seconds)
msleep(seconds * 1000);
}
+#define poll_event_interruptible(event, interval) ({ \
+ int ret = 0; \
+ while (!(event)) { \
+ if (signal_pending(current)) { \
+ ret = -ERESTARTSYS; \
+ break; \
+ } \
+ msleep_interruptible(interval); \
+ } \
+ ret; \
+})
+
#endif /* defined(_LINUX_DELAY_H) */
--
2.13.6
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