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authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2007-03-21 00:36:02 +0900
committerRalf Baechle <ralf@linux-mips.org>2007-04-27 16:20:24 +0100
commit05502339332564ffd545be9ca37b208296a2eaad (patch)
tree18ccc05807e2998ddf25b3b359d680e41ff3c06a /arch/mips
parentf197465384bf7ef1af184c2ed1a4e268911a91e3 (diff)
[MIPS] Select ZONE_DMA only if GENERIC_ISA_DMA selected
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/Kconfig3
-rw-r--r--arch/mips/mm/init.c17
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;