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bounce: allow use of bounce pool via config option

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The tilegx USB OHCI support needs the bounce pool since we're not
using the IOMMU to handle 32-bit addresses.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf
2012-06-16 16:41:05 -04:00
parent 47fc28bff8
commit f100625789
2 changed files with 11 additions and 3 deletions
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6
arch/tile/Kconfig
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@@ -406,6 +406,12 @@ config TILE_USB
Provides USB host adapter support for the built-in EHCI and OHCI
interfaces on TILE-Gx chips.
# USB OHCI needs the bounce pool since tilegx will often have more
# than 4GB of memory, but we don't currently use the IOTLB to present
# a 32-bit address to OHCI. So we need to use a bounce pool instead.
config NEED_BOUNCE_POOL
def_bool USB_OHCI_HCD
config HOTPLUG
bool "Support for hot-pluggable devices"
---help---