lkml.org 
[lkml]   [2016]   [May]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 2/5] watchdog: octeon: Handle the FROZEN hot plug notifier actions.
Hi Richard,

> When performing a suspend operation, the kernel brings all of the
> non-boot CPUs offline, calling the hot plug notifiers with the flag,
> CPU_TASKS_FROZEN, set in the action code. Similarly, during resume,
> the CPUs are brought back online, but again the notifiers have the
> FROZEN flag set.
>
> While some very few drivers really need to treat suspend/resume
> specially, this driver unintentionally ignores the notifications.
>
> This patch changes the driver to disable the watchdog interrupt
> whenever the CPU goes offline, and to enable it whenever the CPU goes
> back online. As a result, the suspended state is no longer a special
> case that leaves the watchdog active.
>
> Cc: Wim Van Sebroeck <wim@iguana.be>
> Cc: Guenter Roeck <linux@roeck-us.net>
> Cc: linux-watchdog@vger.kernel.org
> Signed-off-by: Richard Cochran <rcochran@linutronix.de>
> ---
> drivers/watchdog/octeon-wdt-main.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

This patch has been added to linux-watchdog-next.

Kind regards,
Wim.

\
 
 \ /
  Last update: 2016-05-14 19:21    [W:0.036 / U:0.632 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site