linux-kernel - RE: [PATCH V16 4/6] i2c: tegra: Add DMA support

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Message-ID: <BYAPR12MB33987BF143F5903AE5DA196AC2690@BYAPR12MB3398.namprd12.prod.outlook.com>
Date:   Fri, 8 Feb 2019 17:06:24 +0000
From:   Sowjanya Komatineni <skomatineni@...dia.com>
To:     Dmitry Osipenko <digetx@...il.com>,
        "thierry.reding@...il.com" <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Mantravadi Karthik <mkarthik@...dia.com>,
        Shardar Mohammed <smohammed@...dia.com>,
        Timo Alho <talho@...dia.com>
CC:     "linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>
Subject: RE: [PATCH V16 4/6] i2c: tegra: Add DMA support

> I'm still also suggesting to squash "fix maximum transfer size" into this patch because it is really part of DMA-support enabling.

Max transfer length limits apply to PIO also but for DMA its more needed to prevent crash.
So had this as patch before DMA as its applicable for both DMA & PIO.
We exchanged on this yesterday, so thought the reason you want to squash separate patch and include in this is due to max msg len limit and when moved into hw feature.

Sorry should have verified before sending. Please confirm if I leave max transfer as separate patch or add to this DMA support. Will update along with dma buf size fix.

But max transfer limit applied to PIO also and that’s why added it before DMA patch to show its dependency