Re: [PATCH 2/2] i2c: qup: Fixed the DMA segments length

From	Wolfram Sang <wsa@the-dreams.de>
Newsgroups	linux.kernel
Subject	Re: [PATCH 2/2] i2c: qup: Fixed the DMA segments length
Date	2016-07-15 08:40 +0200
Message-ID	<rV4WZ-3uz-5@gated-at.bofh.it> (permalink)
References	<rwSNj-5L9-3@gated-at.bofh.it> <rwSNj-5L9-1@gated-at.bofh.it>
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On Mon, May 09, 2016 at 06:14:31PM +0530, Abhishek Sahu wrote:
> 1. The current QCOM I2C driver code is failing for transfer length
> greater than 255. This is happening due to improper segments length
> as the I2C DMA segments can be maximum of 256 bytes.
> 
> 2. The transfer length tlen was being initialized with 0 for 256
> bytes, which is being passed for DMA mappings resulting in improper
> DMA mapping length.
> 
> This patch fixes the above said problems by initializing the block
> count with the values calculated in qup_i2c_set_blk_data and calculating
> the remaining length for last DMA segment. Also, the block data length
> need to be decremented after each transfer. Additionally, this patch
> corrects the tlen assignment for DMA mapping.
> 
> Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>

Applied to for-next, thanks!

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Re: [PATCH 2/2] i2c: qup: Fixed the DMA segments length Wolfram Sang <wsa@the-dreams.de> - 2016-07-15 08:40 +0200

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