From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date: Tue, 16 Oct 2012 04:35:59 +0000 (-0700)
Subject: printk: Fix scheduling-while-atomic problem in console_cpu_notify()
X-Git-Tag: v3.2.56~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d8db5f989887fe1d37757d02caf47cbc6cc49199;p=pandora-kernel.git

printk: Fix scheduling-while-atomic problem in console_cpu_notify()

commit 85eae82a0855d49852b87deac8653e4ebc8b291f upstream.

The console_cpu_notify() function runs with interrupts disabled in the
CPU_DYING case.  It therefore cannot block, for example, as will happen
when it calls console_lock().  Therefore, remove the CPU_DYING leg of
the switch statement to avoid this problem.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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