bounce: allow use of bounce pool via config option

[mirror_ubuntu-bionic-kernel.git] / arch / tile / Kconfig

diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index cf4bb69ea8e5db0271c643a67b5782e3412262a4..932e4430f7f3323ef9be06d2f4b1f8ac98ae611f 100644 (file)
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -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---