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m32r: mm: fix build warning

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While building we are getting warnings:

  arch/m32r/mm/init.c:63:17: warning: unused variable 'low'
  arch/m32r/mm/init.c:62:17: warning: unused variable 'max_dma'

max_dma and low are only used if CONFIG_MMU is defined.  Lets declare
the variables inside the #ifdef.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Sudip Mukherjee 2016-03-15 14:52:52 -07:00 committed by Linus Torvalds
parent 25528213fe
commit 3701dc8151
1 changed files with 14 additions and 11 deletions
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25
arch/m32r/mm/init.c
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@ -59,21 +59,24 @@ void free_initrd_mem(unsigned long, unsigned long);
void __init zone_sizes_init(void) void __init zone_sizes_init(void)
{ {
unsigned long zones_size[MAX_NR_ZONES] = {0, }; unsigned long zones_size[MAX_NR_ZONES] = {0, };
unsigned long max_dma;
unsigned long low;
unsigned long start_pfn; unsigned long start_pfn;
#ifdef CONFIG_MMU #ifdef CONFIG_MMU
start_pfn = START_PFN(0); {
max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT; unsigned long low;
low = MAX_LOW_PFN(0); unsigned long max_dma;
if (low < max_dma){ start_pfn = START_PFN(0);
zones_size[ZONE_DMA] = low - start_pfn; max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
zones_size[ZONE_NORMAL] = 0; low = MAX_LOW_PFN(0);
} else {
zones_size[ZONE_DMA] = low - start_pfn; if (low < max_dma) {
zones_size[ZONE_NORMAL] = low - max_dma; zones_size[ZONE_DMA] = low - start_pfn;
zones_size[ZONE_NORMAL] = 0;
} else {
zones_size[ZONE_DMA] = low - start_pfn;
zones_size[ZONE_NORMAL] = low - max_dma;
}
} }
#else #else
zones_size[ZONE_DMA] = 0 >> PAGE_SHIFT; zones_size[ZONE_DMA] = 0 >> PAGE_SHIFT;