[prev in list] [next in list] [prev in thread] [next in thread] 

List:       linux-stable-commits
Subject:    Patch "PM: runtime: Fix timer_expires data type on 32-bit arches" has been added to the 5.9-stable t
From:       <gregkh () linuxfoundation ! org>
Date:       2020-10-31 10:24:54
Message-ID: 160413989453115 () kroah ! com
[Download RAW message or body]


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

    PM: runtime: Fix timer_expires data type on 32-bit arches

to the 5.9-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-runtime-fix-timer_expires-data-type-on-32-bit-arches.patch
and it can be found in the queue-5.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


From 6b61d49a55796dbbc479eeb4465e59fd656c719c Mon Sep 17 00:00:00 2001
From: Grygorii Strashko <grygorii.strashko@ti.com>
Date: Fri, 18 Sep 2020 19:55:18 +0300
Subject: PM: runtime: Fix timer_expires data type on 32-bit arches

From: Grygorii Strashko <grygorii.strashko@ti.com>

commit 6b61d49a55796dbbc479eeb4465e59fd656c719c upstream.

Commit 8234f6734c5d ("PM-runtime: Switch autosuspend over to using
hrtimers") switched PM runtime autosuspend to use hrtimers and all
related time accounting in ns, but missed to update the timer_expires
data type in struct dev_pm_info to u64.

This causes the timer_expires value to be truncated on 32-bit
architectures when assignment is done from u64 values:

rpm_suspend()
|- dev->power.timer_expires = expires;

Fix it by changing the timer_expires type to u64.

Fixes: 8234f6734c5d ("PM-runtime: Switch autosuspend over to using hrtimers")
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Vincent Guittot <vincent.guittot@linaro.org>
Cc: 5.0+ <stable@vger.kernel.org> # 5.0+
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 include/linux/pm.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -590,7 +590,7 @@ struct dev_pm_info {
 #endif
 #ifdef CONFIG_PM
 	struct hrtimer		suspend_timer;
-	unsigned long		timer_expires;
+	u64			timer_expires;
 	struct work_struct	work;
 	wait_queue_head_t	wait_queue;
 	struct wake_irq		*wakeirq;


Patches currently in stable-queue which might be from grygorii.strashko@ti.com are

queue-5.9/pm-runtime-fix-timer_expires-data-type-on-32-bit-arches.patch
[prev in list] [next in list] [prev in thread] [next in thread]