watchdog: delete mpcore_wdt driver

Interrupt request doesn't use the right API: The TWD watchdog uses a per-cpu
interrupt (usually interrupt #30), and the GIC configuration should flag it as
such. With this setup, request_irq() should fail, and the right API is
request_percpu_irq(), together with enable_percpu_irq()/disable_percpu_irq().

Nothing ensures the userspace ioctl() will end-up kicking the watchdog on the
right CPU.

There are no users of this driver since a long time and it makes more sense to
get rid of it as nobody is looking to fix it.

In case somebody wakes up after this has been removed and needs it, please
revert this driver and pick these updates (These were never pushed to mainline):

http://comments.gmane.org/gmane.linux.ports.arm.kernel/245998

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

1 files changed, 0 insertions, 9 deletions

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 7460d349df59..6042e9ed542c 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -221,15 +221,6 @@ config DW_WATCHDOG
           To compile this driver as a module, choose M here: the
           module will be called dw_wdt.
 
-config MPCORE_WATCHDOG
-        tristate "MPcore watchdog"
-        depends on HAVE_ARM_TWD
-        help
-          Watchdog timer embedded into the MPcore system.
-
-          To compile this driver as a module, choose M here: the
-          module will be called mpcore_wdt.
-
 config EP93XX_WATCHDOG
         tristate "EP93xx Watchdog"
         depends on ARCH_EP93XX