tree 4f02076f8c61d9a99808fcbb53d672e240f7970c
parent b6ef36d2c1e391adc1fe1b2dd2a0f887a9f3052b
author Richard Cochran <rcochran@linutronix.de> 1458336368 +0100
committer Wim Van Sebroeck <wim@iguana.be> 1463210541 +0200

watchdog: octeon: Handle the FROZEN hot plug notifier actions.

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.

Signed-off-by: Richard Cochran <rcochran@linutronix.de>
Cc: linux-watchdog@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>