linux-kernel - Re: [PATCH v1 0/1] Add immediate DMA support

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Message-ID: <56bf2e08-e8e3-4aca-9d51-176c009bedd5@quicinc.com>
Date: Thu, 28 Nov 2024 19:05:54 +0530
From: Jyothi Kumar Seerapu <quic_jseerapu@...cinc.com>
To: Mark Brown <broonie@...nel.org>
CC: Vinod Koul <vkoul@...nel.org>, <linux-arm-msm@...r.kernel.org>,
        <dmaengine@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-spi@...r.kernel.org>, <quic_msavaliy@...cinc.com>,
        <quic_vtanuku@...cinc.com>
Subject: Re: [PATCH v1 0/1] Add immediate DMA support



On 11/21/2024 5:32 PM, Mark Brown wrote:
> On Thu, Nov 21, 2024 at 05:22:00PM +0530, Jyothi Kumar Seerapu wrote:
>> The DMA TRE(Transfer ring element) buffer contains the DMA
>> buffer address. Accessing data from this address can cause
>> significant delays in SPI transfers, which can be mitigated to
>> some extent by utilizing immediate DMA support.
> 
> Please don't send cover letters for single patches, if there is anything
> that needs saying put it in the changelog of the patch or after the ---
> if it's administrative stuff.  This reduces mail volume and ensures that
> any important information is recorded in the changelog rather than being
> lost.

Sure, thanks. will follow it for single patch.