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authorPaul Mundt <lethal@linux-sh.org>2009-10-27 10:35:02 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-10-27 10:35:02 +0900
commit01be5d63fd4645eab1d05a7caa04462c11c8b7a1 (patch)
tree9c316a404a55dc2a43ef5e0156590d37a828cf54 /arch/sh/drivers
parent3f375f12ecb9c691dda70bb64b313e55fe6ee4ee (diff)
downloadop-kernel-dev-01be5d63fd4645eab1d05a7caa04462c11c8b7a1.zip
op-kernel-dev-01be5d63fd4645eab1d05a7caa04462c11c8b7a1.tar.gz
sh: Revamp PCI DMA coherence Kconfig bits.
Leaving this configurable caused more trouble than it was ever worth, so just make it explicit. Boards that are verified one way or the other can fix up their selects accordingly. We presently default to non-coherent for most platforms. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/drivers')
-rw-r--r--arch/sh/drivers/pci/Kconfig12
1 files changed, 0 insertions, 12 deletions
diff --git a/arch/sh/drivers/pci/Kconfig b/arch/sh/drivers/pci/Kconfig
index e8db585..78a3ce1 100644
--- a/arch/sh/drivers/pci/Kconfig
+++ b/arch/sh/drivers/pci/Kconfig
@@ -5,15 +5,3 @@ config PCI
Find out whether you have a PCI motherboard. PCI is the name of a
bus system, i.e. the way the CPU talks to the other stuff inside
your box. If you have PCI, say Y, otherwise N.
-
-config SH_PCIDMA_NONCOHERENT
- bool "Cache and PCI noncoherent"
- depends on PCI
- default y
- help
- Enable this option if your platform does not have a CPU cache which
- remains coherent with PCI DMA. It is safest to say 'Y', although you
- will see better performance if you can say 'N', because the PCI DMA
- code will not have to flush the CPU's caches. If you have a PCI host
- bridge integrated with your SH CPU, refer carefully to the chip specs
- to see if you can say 'N' here. Otherwise, leave it as 'Y'.
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