From: Dan Williams <dan.j.williams@intel.com>
Date: Fri, 20 Jul 2007 01:07:31 +0000 (+0100)
Subject: [ARM] 4494/1: iop13xx: fix up elf_hwcap compile breakage
X-Git-Tag: v2.6.23-rc1~8^2^3~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7dea1b20066cd30fb54da7e686b16b5e38b46b2d;p=pandora-kernel.git

[ARM] 4494/1: iop13xx: fix up elf_hwcap compile breakage

arch/arm/boot/compressed/misc.o: In function `valid_user_regs':
misc.c:(.text+0x74): undefined reference to `elf_hwcap'

This triggers after the various elf_hwcap cleanups in:
f884b1cf578e079f01682514ae1ae64c74586602
d1cbbd6b413510c6512f4f80ffd48db1a8dd554a

include/asm-arm/arch-iop13xx/uncompress.h calls cpu_relax while spinning on
a register value.  cpu_relax requires processor.h->ptrace.h->hwcap.h

'elf_hwcap' is defined as an extern, but since the uncompressor does not
link against arch/arm/kernel/setup.c 'elf_hwcap' remains undefined.

Fix is to open code the cpu_relax() call as barrier().

Cc: Lennert Buytenhek <kernel@wantstofly.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

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