diff options
| author | David Rientjes <rientjes@google.com> | 2011-03-22 16:34:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-22 17:44:16 -0700 |
| commit | 586f83e2b4c080073b115c1a0fcc2757f52839b8 (patch) | |
| tree | 72d1647d12216e7fb74f4567f583de2ed732a75d /drivers/pnp/base.h | |
| parent | ff859ba6d166202d6fd8d6344a41be54e4c8a2b6 (diff) | |
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/base.h')
| -rw-r--r-- | drivers/pnp/base.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pnp/base.h b/drivers/pnp/base.h index 19bc73695475..fa4e0a5db3f8 100644 --- a/drivers/pnp/base.h +++ b/drivers/pnp/base.h @@ -142,7 +142,9 @@ void __pnp_remove_device(struct pnp_dev *dev); int pnp_check_port(struct pnp_dev *dev, struct resource *res); int pnp_check_mem(struct pnp_dev *dev, struct resource *res); int pnp_check_irq(struct pnp_dev *dev, struct resource *res); +#ifdef CONFIG_ISA_DMA_API int pnp_check_dma(struct pnp_dev *dev, struct resource *res); +#endif char *pnp_resource_type_name(struct resource *res); void dbg_pnp_show_resources(struct pnp_dev *dev, char *desc); |