| From | John Stultz <> | Subject | [PATCH 015/115] gpu: ion: Map only the vma size given | Date | Fri, 13 Dec 2013 14:23:49 -0800 |
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From: Laura Abbott <lauraa@codeaurora.org>
When mapping carveout buffers into userspace, only map the size of the vma given, not the full size of the buffer since clients may map less than the buffer size.
Signed-off-by: Laura Abbott <lauraa@codeaurora.org> [jstultz: modified patch to apply to staging directory] Signed-off-by: John Stultz <john.stultz@linaro.org> --- drivers/staging/android/ion/ion_carveout_heap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/android/ion/ion_carveout_heap.c b/drivers/staging/android/ion/ion_carveout_heap.c index e8c4e36..16f4fc7 100644 --- a/drivers/staging/android/ion/ion_carveout_heap.c +++ b/drivers/staging/android/ion/ion_carveout_heap.c @@ -116,7 +116,7 @@ int ion_carveout_heap_map_user(struct ion_heap *heap, struct ion_buffer *buffer, { return remap_pfn_range(vma, vma->vm_start, __phys_to_pfn(buffer->priv_phys) + vma->vm_pgoff, - buffer->size, + vma->vm_end - vma->vm_start, pgprot_noncached(vma->vm_page_prot)); } -- 1.8.3.2
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