Commit 16b3ae12 authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Greg Kroah-Hartman
Browse files

clocksource: Initialize cs->wd_list 



commit 5b9e886a upstream.

A number of places relies on list_empty(&cs->wd_list), however the
list_head does not get initialized. Do so upon registration, such that
thereafter it is possible to rely on list_empty() correctly reflecting
the list membership status.

Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Tested-by: default avatarDiego Viola <diego.viola@gmail.com>
Reviewed-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: stable@vger.kernel.org
Cc: len.brown@intel.com
Cc: rjw@rjwysocki.net
Cc: rui.zhang@intel.com
Link: https://lkml.kernel.org/r/20180430100344.472662715@infradead.org


Signed-off-by: default avatarSudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a406abeb

kernel/time/clocksource.c

+2 −0
Original line number Diff line number Diff line
@@ -322,6 +322,8 @@ static void clocksource_enqueue_watchdog(struct clocksource *cs) 
{

	unsigned long flags;



	INIT_LIST_HEAD(&cs->wd_list);



	spin_lock_irqsave(&watchdog_lock, flags);

	if (cs->flags & CLOCK_SOURCE_MUST_VERIFY) {

		/* cs is a clocksource to be watched. */