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Commit 5123b492 authored by Mitchel Humpherys's avatar Mitchel Humpherys Committed by Patrick Daly
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iommu/io-pgtable: Improve documentation of .map_sg callback 



The return value of the .map_sg callback is currently undocumented.
Document it.

Change-Id: I195cbfb78eaf173d916dd03190f89b2fe04e144e
Signed-off-by: default avatarMitchel Humpherys <mitchelh@codeaurora.org>
Signed-off-by: default avatarPatrick Daly <pdaly@codeaurora.org>
parent 4d7cdd9e

drivers/iommu/io-pgtable.h

+2 −1
Original line number Diff line number Diff line
@@ -105,7 +105,8 @@ struct io_pgtable_cfg { 
 * struct io_pgtable_ops - Page table manipulation API for IOMMU drivers.

 *

 * @map:          Map a physically contiguous memory region.

 * @map_sg:	  Map a scatterlist. The size parameter contains the size

 * @map_sg:	  Map a scatterlist.  Returns the number of bytes mapped,

 *		  or 0 on failure.  The size parameter contains the size

 *		  of the partial mapping in case of failure.

 * @unmap:        Unmap a physically contiguous memory region.

 * @iova_to_phys: Translate iova to physical address.