X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=Documentation%2FDMA-API-HOWTO.txt;h=979228bc9035ca35463a6adfb9db2a7c9f40f9a1;hb=6afd563d4bbc1924b7de9e053324c007e0d36476;hp=781024ef90502f700baf258115c3715420fc8fb0;hpb=b8155fe1b2963ab2c53140929eb2362afcb9ccfe;p=cascardo%2Flinux.git

diff --git a/Documentation/DMA-API-HOWTO.txt b/Documentation/DMA-API-HOWTO.txt
index 781024ef9050..979228bc9035 100644
--- a/Documentation/DMA-API-HOWTO.txt
+++ b/Documentation/DMA-API-HOWTO.txt
@@ -699,7 +699,7 @@ 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(cp->dev, dma_handle)) {
+		if (dma_mapping_error(cp->dev, mapping)) {
 			/*
 			 * reduce current DMA mapping usage,
 			 * delay and try again later or
@@ -931,10 +931,8 @@ to "Closing".
 
 1) Struct scatterlist requirements.
 
-   Don't invent the architecture specific struct scatterlist; just use
-   <asm-generic/scatterlist.h>. You need to enable
-   CONFIG_NEED_SG_DMA_LENGTH if the architecture supports IOMMUs
-   (including software IOMMU).
+   You need to enable CONFIG_NEED_SG_DMA_LENGTH if the architecture
+   supports IOMMUs (including software IOMMU).
 
 2) ARCH_DMA_MINALIGN