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David Rientjes 1c00f0161f x86: allow CONFIG_ISA_DMA_API to be disabled 
Not all 64-bit systems require ISA-style DMA, so allow it to be
configurable.  x86 utilizes the generic ISA DMA allocator from
kernel/dma.c, so require it only when CONFIG_ISA_DMA_API is enabled.

Disabling CONFIG_ISA_DMA_API is dependent on x86_64 since those machines
do not have ISA slots and benefit the most from disabling the option (and
on CONFIG_EXPERT as required by H.  Peter Anvin).

When disabled, this also avoids declaring claim_dma_lock(),
release_dma_lock(), request_dma(), and free_dma() since those interfaces
will no longer be provided.

Signed-off-by: David Rientjes <rientjes@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 17:44:16 -07:00
..
alpha add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
arm add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
avr32 add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
blackfin Blackfin: ip0x: fix unused variable warning 2011-03-18 05:17:02 -04:00
cris add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
frv add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
h8300 add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
ia64 add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
m32r add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
m68k add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
m68knommu Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu 2011-03-16 19:02:36 -07:00
microblaze Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2011-03-20 18:14:55 -07:00
mips add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
mn10300 add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
parisc add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
powerpc add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
s390 add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
score mm: NUMA aware alloc_thread_info_node() 2011-03-22 17:44:01 -07:00
sh mm: NUMA aware alloc_thread_info_node() 2011-03-22 17:44:01 -07:00
sparc add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
tile mm: NUMA aware alloc_thread_info_node() 2011-03-22 17:44:01 -07:00
um um: remove file pointer from ioctl 2011-03-22 17:44:09 -07:00
unicore32 unicore32: rewrite arch-specific tlb.h to use asm-generic version 2011-03-17 09:19:21 +08:00
x86 x86: allow CONFIG_ISA_DMA_API to be disabled 2011-03-22 17:44:16 -07:00
xtensa add the common dma_addr_t typedef to include/linux/types.h 2011-03-22 17:44:09 -07:00
.gitignore
Kconfig oprofile, s390: Cleanups 2011-03-16 14:30:40 +01:00