linux-kernel - mips build failures due to commit 8dd928915a73 (mips: fix up obsolete cpu function usage)

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Date:	Mon, 20 Apr 2015 12:40:28 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	linux-kernel@...r.kernel.org
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Florian Fainelli <f.fainelli@...il.com>,
	linux-mips@...ux-mips.org
Subject: mips build failures due to commit 8dd928915a73 (mips: fix up
 obsolete cpu function usage)

Hi,

the upstream kernel fails to build mips:nlm_xlp_defconfig,
mips:nlm_xlp_defconfig, mips:cavium_octeon_defconfig, and possibly
other targets, with errors such as

arch/mips/kernel/smp.c:211:2: error:
	passing argument 2 of 'cpumask_set_cpu' discards 'volatile' qualifier
	from pointer target type
arch/mips/kernel/process.c:52:2: error:
	passing argument 2 of 'cpumask_test_cpu' discards 'volatile' qualifier
	from pointer target type
arch/mips/cavium-octeon/smp.c:242:2: error:
	passing argument 2 of 'cpumask_clear_cpu' discards 'volatile' qualifier
	from pointer target type

The problem was introduced with commit 8dd928915a73 (" mips: fix up obsolete cpu
function usage"). I would send a patch to fix it, but I am not sure if removing
'volatile' from the variable declaration(s) would be a good idea.

I don't recall seeing the problem in -next, but unless I am missing something,
the patch never made it into -next to start with.

Guenter
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