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ARM: msm: avoid calling debug_ll_addr on !MMU 

MSM7X00A has an open-coded version of debug_ll_io_init so it
can use MT_DEVICE_NONSHARED as required by the platform.

However, this fails to build on no-MMU kernels because the
debug_ll_addr function is not available. Since the iotable_init
function doesn't actually do anyting in this configuration,
we can simply get away by enclosing the broken function call
in an #ifdef, which seems to be the least ugly workaround.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: David Brown <davidb@codeaurora.org>
Cc: Daniel Walker <dwalker@fifo99.com>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
This commit is contained in:
Arnd Bergmann 2014-03-16 20:57:29 +01:00
parent 404ed596de
commit d967b0100f
1 changed files with 2 additions and 0 deletions
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2
arch/arm/mach-msm/io.c
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@ -78,8 +78,10 @@ void __init msm_map_common_io(void)
asm("mcr p15, 0, %0, c15, c2, 4" : : "r" (0));
#if defined(CONFIG_DEBUG_MSM_UART1) || defined(CONFIG_DEBUG_MSM_UART2) || \
defined(CONFIG_DEBUG_MSM_UART3)
#ifdef CONFIG_MMU
debug_ll_addr(&msm_io_desc[size - 1].pfn,
&msm_io_desc[size - 1].virtual);
#endif
msm_io_desc[size - 1].pfn = __phys_to_pfn(msm_io_desc[size - 1].pfn);
#endif
iotable_init(msm_io_desc, size);