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ANDROID: dma: Rework so dev_get_cma_area() can be called from a module

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Export dma_contiguous_default_area so dev_get_cma_area() can be called
from a module.

This allows the CMA dma-buf heap to be configured and built as a module.

Signed-off-by: John Stultz <john.stultz@linaro.org>
Change-Id: I8ae944c147ff83dcd8d42a39efa6769dae4039b7
Bug: 155218010
Link: https://lore.kernel.org/lkml/20191025234834.28214-2-john.stultz@linaro.org/
Signed-off-by: Hridya Valsaraju <hridya@google.com>
This commit is contained in:
John Stultz 2020-10-30 06:49:41 +00:00 • committed by Tao Huang
commit c5c98fa168
1 changed files with 1 additions and 0 deletions
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kernel/dma/contiguous.c
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@ -58,6 +58,7 @@
#endif
struct cma *dma_contiguous_default_area;
EXPORT_SYMBOL_GPL(dma_contiguous_default_area);
/*
* Default global CMA area size can be defined in kernel's .config.