linux-kernel - Re: [PATCH v2 2/3] i2c: Add helper to ease DMA handling

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Message-ID: <20180808205752.llowh4bvu2wkuhga@ninjato>
Date:   Wed, 8 Aug 2018 22:57:53 +0200
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Jun Gao <jun.gao@...iatek.com>
Cc:     srv_heupstream@...iatek.com, devicetree@...r.kernel.org,
        linux-i2c@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH v2 2/3] i2c: Add helper to ease DMA handling

On Sat, Jul 07, 2018 at 05:29:54PM +0800, Jun Gao wrote:
> From: Jun Gao <jun.gao@...iatek.com>
> 
> This function is needed by i2c_get_dma_safe_msg_buf() potentially.
> It is used to free DMA safe buffer when DMA operation fails.
> 
> Signed-off-by: Jun Gao <jun.gao@...iatek.com>

Right, we need something like this. This leaks in the sh_mobile driver,
too :(

I am still thinking if there is a nice way to put this functionality
into i2c_release_dma_safe_msg_buf() itself somehow...

Thanks!


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