watchdog: Add comments to explain the watchdog_disabled variable
watchdog: Add comments to explain the watchdog_disabled variable

The watchdog_disabled flag is a bit cryptic. However it's
usefulness is multifold. Uses are:

 1. Check if smpboot_register_percpu_thread function passed.

 2. Makes sure that user enables and disables the watchdog in
    sequence i.e. enable watchdog->disable watchdog->enable watchdog
    Unlike enable watchdog->enable watchdog which is wrong.

Signed-off-by: anish kumar <56bf4a938a1f85c13be9ccd9bd34fdf2faf1a871@gmail.com>
[small text cleanups]
Signed-off-by: Don Zickus <3c9a8cec2f33672bf03519b05ce2324e6cf5717a@redhat.com>
Cc: 858732b0d97598091e89a0d1be1593caf0442efe@intel.com
Cc: 1e0ce936bb9b355d257bf5790d2513c3f28be22b@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1363113848-18344-1-git-send-email-3c9a8cec2f33672bf03519b05ce2324e6cf5717a@redhat.com
Signed-off-by: Ingo Molnar <9dbbbf0688fedc85ad4da37637f1a64b8c718ee2@kernel.org>

KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas