pnp: only assign IORESOURCE_DMA if CONFIG_ISA_DMA_API is enabled
commit586f83e2b4c080073b115c1a0fcc2757f52839b8
authorDavid Rientjes <rientjes@google.com>
Tue, 22 Mar 2011 23:34:56 +0000 (22 16:34 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 23 Mar 2011 00:44:16 +0000 (22 17:44 -0700)
tree72d1647d12216e7fb74f4567f583de2ed732a75d
parentff859ba6d166202d6fd8d6344a41be54e4c8a2b6
pnp: only assign IORESOURCE_DMA if CONFIG_ISA_DMA_API is enabled

IORESOURCE_DMA cannot be assigned without utilizing the interface
provided by CONFIG_ISA_DMA_API, specifically request_dma() and
free_dma().  Thus, there's a strict dependency on the config option and
limits IORESOURCE_DMA only to architectures that support ISA-style DMA.

ia64 is not one of those architectures, so pnp_check_dma() no longer
needs to be special-cased for that architecture.

pnp_assign_resources() will now return -EINVAL if IORESOURCE_DMA is
attempted on such a kernel.

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>
drivers/pnp/base.h
drivers/pnp/manager.c
drivers/pnp/resource.c