Patch "PM / sleep: Increase default DPM watchdog timeout to 60" has been added to the 4.1-stable tree

This is a note to let you know that I've just added the patch titled

PM / sleep: Increase default DPM watchdog timeout to 60

to the 4.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
pm-sleep-increase-default-dpm-watchdog-timeout-to-60.patch
and it can be found in the queue-4.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Takashi Iwai <[email protected]>
Date: Thu, 25 Jun 2015 00:35:16 +0200
Subject: PM / sleep: Increase default DPM watchdog timeout to 60

From: Takashi Iwai <[email protected]>

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.

---
 kernel/power/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -187,7 +187,7 @@ config DPM_WATCHDOG
 config DPM_WATCHDOG_TIMEOUT
 	int "Watchdog timeout in seconds"
 	range 1 120
-	default 12
+	default 60
 	depends on DPM_WATCHDOG
 
 config PM_TRACE

Patches currently in stable-queue which might be from [email protected] are

queue-4.1/pm-sleep-increase-default-dpm-watchdog-timeout-to-60.patch