diff options
| author | David Rientjes <rientjes@google.com> | 2011-03-23 02:34:56 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-23 03:44:16 +0300 |
| commit | 586f83e2b4c080073b115c1a0fcc2757f52839b8 (patch) | |
| tree | 72d1647d12216e7fb74f4567f583de2ed732a75d /drivers/pnp/resource.c | |
| parent | ff859ba6d166202d6fd8d6344a41be54e4c8a2b6 (diff) | |
| download | linux-586f83e2b4c080073b115c1a0fcc2757f52839b8.tar.xz | |
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>
Diffstat (limited to 'drivers/pnp/resource.c')
| -rw-r--r-- | drivers/pnp/resource.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c index a925e6b63d72..b0ecacbe53b1 100644 --- a/drivers/pnp/resource.c +++ b/drivers/pnp/resource.c @@ -409,9 +409,9 @@ int pnp_check_irq(struct pnp_dev *dev, struct resource *res) return 1; } +#ifdef CONFIG_ISA_DMA_API int pnp_check_dma(struct pnp_dev *dev, struct resource *res) { -#ifndef CONFIG_IA64 int i; struct pnp_dev *tdev; struct resource *tres; @@ -466,11 +466,8 @@ int pnp_check_dma(struct pnp_dev *dev, struct resource *res) } return 1; -#else - /* IA64 does not have legacy DMA */ - return 0; -#endif } +#endif /* CONFIG_ISA_DMA_API */ unsigned long pnp_resource_type(struct resource *res) { |