]> pilppa.com Git - linux-2.6-omap-h63xx.git/commit
[ARM] 4494/1: iop13xx: fix up elf_hwcap compile breakage
authorDan Williams <dan.j.williams@intel.com>
Fri, 20 Jul 2007 01:07:31 +0000 (02:07 +0100)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Fri, 20 Jul 2007 08:35:35 +0000 (09:35 +0100)
commit7dea1b20066cd30fb54da7e686b16b5e38b46b2d
treebf4ccad6871f9b62426659f469a07360fb3166c3
parenta8135fcfd0431eda3653c7069e7aefc8674fdfbe
[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>
include/asm-arm/arch-iop13xx/uncompress.h