linux-kernel - Re: [PATCH] dma: imx-sdma: Fix the event id check to include RX event for UART6

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Message-ID: <CAOMZO5CyYbAZRZrGLJNJXNJiekJXptUTu8tOfVw6y7-n-CXesg@mail.gmail.com>
Date:   Mon, 24 Feb 2020 15:43:13 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Schrempf Frieder <frieder.schrempf@...tron.de>
Cc:     Dan Williams <dan.j.williams@...el.com>,
        Linus Walleij <linus.ml.walleij@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>, Vinod Koul <vkoul@...nel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dma: imx-sdma: Fix the event id check to include RX event
 for UART6

Hi Frieder,

On Mon, Feb 24, 2020 at 2:22 PM Schrempf Frieder
<frieder.schrempf@...tron.de> wrote:
>
> From: Frieder Schrempf <frieder.schrempf@...tron.de>
>
> On i.MX6 the DMA event for the RX channel of UART6 is '0'. To fix

I would suggest being a bit more specific than saying i.MX6.

I see UART6 is present on i.MX6UL/i.MX6SX, but not on i.MX6Q/i.MX6DL,
so it would be better to specify it in the commit log.

imx6ul.dtsi does not have dma nodes under uart6, so I guess you fixed
it for imx6sx.

> the broken DMA support for UART6, we change the check for event_id0
> to include '0' as a valid id.
>
> Fixes: 1ec1e82f2510 ("dmaengine: Add Freescale i.MX SDMA support")
> Cc: stable@...r.kernel.org
> Signed-off-by: Frieder Schrempf <frieder.schrempf@...tron.de>

Reviewed-by: Fabio Estevam <festevam@...il.com>