diff options
| -rw-r--r-- | arch/mips/Kconfig | 3 | ||||
| -rw-r--r-- | arch/mips/mm/init.c | 17 |
2 files changed, 9 insertions, 11 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index acceae0e831..f9c4ba58d38 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -10,7 +10,6 @@ menu "Machine selection" config ZONE_DMA bool - default y choice prompt "System type" @@ -923,6 +922,7 @@ config SYS_HAS_EARLY_PRINTK config GENERIC_ISA_DMA bool + select ZONE_DMA config I8259 bool @@ -946,6 +946,7 @@ config MIPS_DISABLE_OBSOLETE_IDE config GENERIC_ISA_DMA_SUPPORT_BROKEN bool + select ZONE_DMA # # Endianess selection. Sufficiently obscure so many users don't know what to diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c index e9951c0e689..8800c88cbbf 100644 --- a/arch/mips/mm/init.c +++ b/arch/mips/mm/init.c @@ -351,18 +351,15 @@ void __init paging_init(void) #endif kmap_coherent_init(); -#ifdef CONFIG_ISA - if (max_low_pfn >= MAX_DMA_PFN) - if (min_low_pfn >= MAX_DMA_PFN) { - zones_size[ZONE_DMA] = 0; - zones_size[ZONE_NORMAL] = max_low_pfn - min_low_pfn; - } else { - zones_size[ZONE_DMA] = MAX_DMA_PFN - min_low_pfn; - zones_size[ZONE_NORMAL] = max_low_pfn - MAX_DMA_PFN; - } +#ifdef CONFIG_ZONE_DMA + if (min_low_pfn < MAX_DMA_PFN && MAX_DMA_PFN <= max_low_pfn) { + zones_size[ZONE_DMA] = MAX_DMA_PFN - min_low_pfn; + zones_size[ZONE_NORMAL] = max_low_pfn - MAX_DMA_PFN; + } else if (max_low_pfn < MAX_DMA_PFN) + zones_size[ZONE_DMA] = max_low_pfn - min_low_pfn; else #endif - zones_size[ZONE_DMA] = max_low_pfn - min_low_pfn; + zones_size[ZONE_NORMAL] = max_low_pfn - min_low_pfn; #ifdef CONFIG_HIGHMEM zones_size[ZONE_HIGHMEM] = highend_pfn - highstart_pfn; |