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arm64: Fix build with CONFIG_ZONE_DMA=n

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Trying to build with CONFIG_ZONE_DMA=n leaves visible references
to the now-undefined ZONE_DMA, resulting in a syntax error.

Hide the references behind an #ifdef instead of using IS_ENABLED.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Robin Murphy 2015-10-27 17:40:26 +00:00 committed by Catalin Marinas
parent 5accd17d0e
commit 86a5906e4d
1 changed files with 7 additions and 6 deletions
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13
arch/arm64/mm/init.c
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@ -86,10 +86,10 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max)
memset(zone_size, 0, sizeof(zone_size));
/* 4GB maximum for 32-bit only capable devices */
if (IS_ENABLED(CONFIG_ZONE_DMA)) {
max_dma = PFN_DOWN(arm64_dma_phys_limit);
zone_size[ZONE_DMA] = max_dma - min;
}
#ifdef CONFIG_ZONE_DMA
max_dma = PFN_DOWN(arm64_dma_phys_limit);
zone_size[ZONE_DMA] = max_dma - min;
#endif
zone_size[ZONE_NORMAL] = max - max_dma;
memcpy(zhole_size, zone_size, sizeof(zhole_size));
@ -101,11 +101,12 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max)
if (start >= max)
continue;
if (IS_ENABLED(CONFIG_ZONE_DMA) && start < max_dma) {
#ifdef CONFIG_ZONE_DMA
if (start < max_dma) {
unsigned long dma_end = min(end, max_dma);
zhole_size[ZONE_DMA] -= dma_end - start;
}
#endif
if (end > max_dma) {
unsigned long normal_end = min(end, max);
unsigned long normal_start = max(start, max_dma);