PM / sleep: Increase default DPM watchdog timeout to 60
authorTakashi Iwai <tiwai@suse.de>
Wed, 24 Jun 2015 22:35:16 +0000 (00:35 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 3 Aug 2015 16:29:15 +0000 (09:29 -0700)
commit01fed2338abfbfd9719bc9ae0f2673c145f24955
tree04a00b077b4a0aa2e213cf40359267513c5dd384
parentc791ad1e41a2b1c8df71590d08dbe4b1a1c3b1d5
PM / sleep: Increase default DPM watchdog timeout to 60

commit fff3b16d2754a061a3549c4307a186423a0128fd upstream.

Many harddisks (mostly WD ones) have firmware problems and take too
long, more than 10 seconds, to resume from suspend.  And this often
exceeds the default DPM watchdog timeout (12 seconds), resulting in a
kernel panic out of sudden.

Since most distros just take the default as is, we should give a bit
more safer value.  This patch increases the default value from 12
seconds to one minute, which has been confirmed to be long enough for
such problematic disks.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=91921
Fixes: 70fea60d888d (PM / Sleep: Detect device suspend/resume lockup and log event)
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
kernel/power/Kconfig