Messages in this thread | | | Date | Thu, 09 Dec 2010 12:00:06 -0800 (PST) | Subject | Re: [RFC PATCH] scatterlist: Initialize the dma_address field with invalid dma address | From | David Miller <> |
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From: Nicolas Ferre <nicolas.ferre@atmel.com> Date: Thu, 9 Dec 2010 14:15:14 +0100
> Initialize the the dma_address field so that it will be possible to test > its value while using scatterlists. This field will be compatible with > testing by dma_mapping_error(). > > Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Please don't do this, it's unjustified and it's going to kill performance. Even if it were a good change, you should have used the invalid DMA address definition defined by various architectures instead of a constant.
You should be aware of whether entries in a scatterlist have been setup by your code path.
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