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ARM: exynos: fix l2x0 saved regs handling

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The exynos4_l2x0_cache_init function tries to flush the data cache
for the location of the saved l2x0 registers and pass the physical
address to the s5p-sleep implementation.

However, the s5p-sleep code is optional, and if it is disabled,
we get a linker error here when the l2x0_regs_phys variable does
not exist.

To solve this, use a compile-time conditional to drop this code
if we don't want it.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Tomasz Figa <tomasz.figa@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Arnd Bergmann 2014-03-13 17:25:52 +01:00
parent 714e330253
commit 39378e4143
1 changed files with 4 additions and 2 deletions
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6
arch/arm/mach-exynos/common.c
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@ -404,8 +404,10 @@ static int __init exynos4_l2x0_cache_init(void)
if (ret)
return ret;
l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);
clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));
if (IS_ENABLED(CONFIG_S5P_SLEEP)) {
l2x0_regs_phys = virt_to_phys(&l2x0_saved_regs);
clean_dcache_area(&l2x0_regs_phys, sizeof(unsigned long));
}
return 0;
}
early_initcall(exynos4_l2x0_cache_init);