From: Alex Elder <elder@linaro.org>
Date: Mon, 21 Apr 2014 21:53:06 +0000 (-0500)
Subject: ARM: bcm: don't special-case CPU 0 in bcm_kona_smc()
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~39^2~45^2~6^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=35138d52f18c3f757f12d54c0962a755bcf218f3;p=pandora-kernel.git

ARM: bcm: don't special-case CPU 0 in bcm_kona_smc()

There's logic in bcm_kona_smc() to ensure __bcm_kona_smc() gets
called on CPU 0; if already executing on CPU 0, that function is
called directly.  The direct call is not protected from interrupts,
however, which is not safe.

Note that smp_call_function_single() is designed to handle the case
where the target cpu is the current one.  It also gets a reference
to the CPU and disables IRQs across the call.

So we can simplify things and at the same time be protected against
interrupts by calling smp_call_function_single() unconditionally.

Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Markus Mayer <markus.mayer@linaro.org>
Reviewed-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Matt Porter <mporter@linaro.org>
---

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