Commit a8c645cb authored Apr 18, 2014 by Chintan Pandya

dma-contiguous: Retrun 'zero' pfn in case of error



When CMA allocator gets error return from the page
allocator framework, except for the -EBUSY case, it
will bail out. Caller depends on the 'pfn' for
confirming allocation successful or not. Return 0
for those error case.

Change-Id: Ica4e04a9f9f18b1a29035ba2bae9deecfd68a5e8
Signed-off-by: Chintan Pandya <cpandya@codeaurora.org>

parent de5acd14

drivers/base/dma-contiguous.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -627,6 +627,7 @@ unsigned long dma_alloc_from_contiguous(struct device *dev, int count,
		if (ret == 0) {
		break;
		} else if (ret != -EBUSY) {
		pfn = 0;
		clear_cma_bitmap(cma, pfn, count);
		break;
		}