From 9bd13b664f6c322f68aaeb66cce515774036472d Mon Sep 17 00:00:00 2001
From: Michal Suchanek <msuchanek@suse.de>
Date: Tue, 16 Jan 2018 17:15:50 +0100
Subject: [PATCH 1/4] delay: add poll_event_interruptible
References: bsc#1048585
Patch-mainline: submitted, https://patchwork.kernel.org/patch/10112435/
Add convenience macro for polling an event that does not have a
waitqueue.
Signed-off-by: Michal Suchanek <msuchanek@suse.de>
---
include/linux/delay.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/include/linux/delay.h b/include/linux/delay.h
index 2ecb3c46b20a..3b5006fcd000 100644
--- a/include/linux/delay.h
+++ b/include/linux/delay.h
@@ -63,4 +63,16 @@ 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