From: Chuansheng Liu <chuansheng.liu@intel.com>
Date: Tue, 27 Nov 2012 00:29:54 +0000 (-0800)
Subject: watchdog: using u64 in get_sample_period()
X-Git-Tag: v3.7-rc8~27^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8ffeb9b0e6369135bf03a073514f571ef10606b9;p=pandora-kernel.git

watchdog: using u64 in get_sample_period()

In get_sample_period(), unsigned long is not enough:

  watchdog_thresh * 2 * (NSEC_PER_SEC / 5)

case1:
  watchdog_thresh is 10 by default, the sample value will be: 0xEE6B2800

case2:
 set watchdog_thresh is 20, the sample value will be: 0x1 DCD6 5000

In case2, we need use u64 to express the sample period.  Otherwise,
changing the threshold thru proc often can not be successful.

Signed-off-by: liu chuansheng <chuansheng.liu@intel.com>
Acked-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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