[ARM] 4134/1: Add generic support for outer caches

The outer cache can be L2 as on RealView/EB MPCore platform or even L3
or further on ARMv7 cores. This patch adds the generic support for
flushing the outer cache in the DMA operations.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/arm/common/dmabounce.c b/arch/arm/common/dmabounce.c
index 272702accd8b..b4748e3171c6 100644
--- a/arch/arm/common/dmabounce.c
+++ b/arch/arm/common/dmabounce.c
@@ -338,6 +338,7 @@ unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
                          */
                         ptr = (unsigned long)buf->ptr;
                         dmac_clean_range(ptr, ptr + size);
+                        outer_clean_range(__pa(ptr), __pa(ptr) + size);
                 }
                 free_safe_buffer(device_info, buf);
         }