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authorLiu Hua <sdu.liu@huawei.com>2014-09-18 06:15:28 +0200
committerJiri Kosina <jkosina@suse.cz>2014-09-26 11:22:29 +0200
commitb2dd83b377d390ab503420c9a5867df5741e273d (patch)
tree34d908e95f7cf6d93b8f210e021d6e8dab27bb68
parentMAINTAINERS: update location of linux-doc tree (diff)
downloadlinux-b2dd83b377d390ab503420c9a5867df5741e273d.tar.xz
linux-b2dd83b377d390ab503420c9a5867df5741e273d.zip
Documentation: correct parameter error for dma_mapping_error
dma_mapping_error takes two parameters, but some of examples in Documentation/DMA-API-HOWTO.txt just takes one. So correct it. Signed-off-by: Liu Hua <sdu.liu@huawei.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
-rw-r--r--Documentation/DMA-API-HOWTO.txt6
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/DMA-API-HOWTO.txt b/Documentation/DMA-API-HOWTO.txt
index dcbbe3602d78..0f7afb2bb442 100644
--- a/Documentation/DMA-API-HOWTO.txt
+++ b/Documentation/DMA-API-HOWTO.txt
@@ -531,7 +531,7 @@ To map a single region, you do:
size_t size = buffer->len;
dma_handle = dma_map_single(dev, addr, size, direction);
- if (dma_mapping_error(dma_handle)) {
+ if (dma_mapping_error(dev, dma_handle)) {
/*
* reduce current DMA mapping usage,
* delay and try again later or
@@ -588,7 +588,7 @@ Specifically:
size_t size = buffer->len;
dma_handle = dma_map_page(dev, page, offset, size, direction);
- if (dma_mapping_error(dma_handle)) {
+ if (dma_mapping_error(dev, dma_handle)) {
/*
* reduce current DMA mapping usage,
* delay and try again later or
@@ -689,7 +689,7 @@ to use the dma_sync_*() interfaces.
dma_addr_t mapping;
mapping = dma_map_single(cp->dev, buffer, len, DMA_FROM_DEVICE);
- if (dma_mapping_error(dma_handle)) {
+ if (dma_mapping_error(cp->dev, dma_handle)) {
/*
* reduce current DMA mapping usage,
* delay and try again later or