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authorAmit Pundir <amit.pundir@linaro.org>2013-11-15 12:56:31 +0530
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-12-03 15:35:52 +0100
commit95f19f658ce177387345b51bd48fed7b9cd7d4e8 (patch)
tree90ab9da7e5f8033a9133293f6793916e65a758be
parentdc1ccc48159d63eca5089e507c82c7d22ef60839 (diff)
downloadop-kernel-dev-95f19f658ce177387345b51bd48fed7b9cd7d4e8.zip
op-kernel-dev-95f19f658ce177387345b51bd48fed7b9cd7d4e8.tar.gz
epoll: drop EPOLLWAKEUP if PM_SLEEP is disabled
Drop EPOLLWAKEUP from epoll events mask if CONFIG_PM_SLEEP is disabled. Signed-off-by: Amit Pundir <amit.pundir@linaro.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-rw-r--r--fs/eventpoll.c3
-rw-r--r--include/uapi/linux/eventpoll.h13
2 files changed, 13 insertions, 3 deletions
diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 79b65c3..8b5e258 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -1852,8 +1852,7 @@ SYSCALL_DEFINE4(epoll_ctl, int, epfd, int, op, int, fd,
goto error_tgt_fput;
/* Check if EPOLLWAKEUP is allowed */
- if ((epds.events & EPOLLWAKEUP) && !capable(CAP_BLOCK_SUSPEND))
- epds.events &= ~EPOLLWAKEUP;
+ ep_take_care_of_epollwakeup(&epds);
/*
* We have to check that the file structure underneath the file descriptor
diff --git a/include/uapi/linux/eventpoll.h b/include/uapi/linux/eventpoll.h
index 2c267bc..bc81fb2 100644
--- a/include/uapi/linux/eventpoll.h
+++ b/include/uapi/linux/eventpoll.h
@@ -61,5 +61,16 @@ struct epoll_event {
__u64 data;
} EPOLL_PACKED;
-
+#ifdef CONFIG_PM_SLEEP
+static inline void ep_take_care_of_epollwakeup(struct epoll_event *epev)
+{
+ if ((epev->events & EPOLLWAKEUP) && !capable(CAP_BLOCK_SUSPEND))
+ epev->events &= ~EPOLLWAKEUP;
+}
+#else
+static inline void ep_take_care_of_epollwakeup(struct epoll_event *epev)
+{
+ epev->events &= ~EPOLLWAKEUP;
+}
+#endif
#endif /* _UAPI_LINUX_EVENTPOLL_H */
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