From: Thomas Gleixner Date: Tue, 4 Dec 2012 17:59:34 +0000 (+0100) Subject: watchdog: Fix CPU hotplug regression X-Git-Tag: v3.7~15^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8d4516904b39507458bee8115793528e12b1d8dd;p=pandora-kernel.git watchdog: Fix CPU hotplug regression Norbert reported: "3.7-rc6 booted with nmi_watchdog=0 fails to suspend to RAM or offline CPUs. It's reproducable with a KVM guest and physical system." The reason is that commit bcd951cf(watchdog: Use hotplug thread infrastructure) missed to take this into account. So the cpu offline code gets stuck in the teardown function because it accesses non initialized data structures. Add a check for watchdog_enabled into that path to cure the issue. Reported-and-tested-by: Norbert Warmuth Tested-by: Joseph Salisbury Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1211231033230.2701@ionos Link: http://bugs.launchpad.net/bugs/1079534 Signed-off-by: Thomas Gleixner --- Reading git-diff-tree failed