[PATCH 044/115] gpu: ion: Don't flush allocatoins that come from the page pools

John Stultz
2013-12-13T22:41:39Z

From: Rebecca Schultz Zavin <rebecca@android.com>

Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
[jstultz: modified patch to apply to staging directory]
Signed-off-by: John Stultz <john.stultz@linaro.org>
---
drivers/staging/android/ion/ion_system_heap.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/android/ion/ion_system_heap.c b/drivers/staging/android/ion/ion_system_heap.c
index ad4933e..02726a9 100644
--- a/drivers/staging/android/ion/ion_system_heap.c
+++ b/drivers/staging/android/ion/ion_system_heap.c
@@ -76,9 +76,14 @@ static struct page *alloc_buffer_page(struct ion_system_heap *heap,
if (order > 4)
gfp_flags = high_order_gfp_flags;
page = alloc_pages(gfp_flags, order);
+ if (!page)
+ return 0;
+ __dma_page_cpu_to_dev(page, 0, PAGE_SIZE << order,
+ DMA_BIDIRECTIONAL);
}
if (!page)
return 0;
+
if (split_pages)
split_page(page, order);
return page;
@@ -201,9 +206,6 @@ static int ion_system_heap_allocate(struct ion_heap *heap,
kfree(info);
}

- dma_sync_sg_for_device(NULL, table->sgl, table->nents,
- DMA_BIDIRECTIONAL);
-
buffer->priv_virt = table;
return 0;
err1:
--
1.8.3.2