tree c1601a98646d895f268a7d70e413e7216ebae265
parent 6b8e5c912f4294611351aba151324764ebbefa1b
author Linus Walleij <linus.walleij@linaro.org> 1334057862 +0100
committer Russell King <rmk+kernel@arm.linux.org.uk> 1334523629 +0100

ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus

During booting of cpu1, there is a short window where cpu1
is online, but not active where cpu1 is occupied by waiting
to become active. If cpu0 then decides to schedule something
on cpu1 and wait for it to complete, before cpu0 has set
cpu1 active, we have a deadlock.

Typically it's this CPU frequency transition that happens at
this time, so let's just not wait for it to happen, it will
happen whenever the CPU eventually comes online instead.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: stable@kernel.org
Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Reviewed-by: Rickard Andersson <rickard.andersson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>