From: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Date: Wed, 11 Feb 2015 12:53:15 +0000 (+0100)
Subject: include/dma-mapping: Clarify output of dma_map_sg
X-Git-Tag: omap-for-v4.1/fixes-rc1~122^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=04abab698285297115e5096b3100df1064045529;p=pandora-kernel.git

include/dma-mapping: Clarify output of dma_map_sg

Although dma_map_sg returns 0 on error and it cannot return a
value < 0, the function returns a signed integer.

Most of the time, this function is used with a scatterlist structure.
This structure uses an unsigned integer for the number of memory.

A dma developer that has not read in detail DMA-API.txt, can wrongly
return a value < 0 on error.

Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---

Reading git-diff-tree failed