linux-kernel - Re: [PATCH] i2c: imx: defer probing on dma channel request

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Message-ID: <20190115215549.sepj7rmpqmtlxwbw@ninjato>
Date:   Tue, 15 Jan 2019 22:55:50 +0100
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Laurentiu Tudor <laurentiu.tudor@....com>
Cc:     linux-i2c@...r.kernel.org, linux-imx@....com, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        fabio.estevam@....com, leoyang.li@....com
Subject: Re: [PATCH] i2c: imx: defer probing on dma channel request

Hi,

On Tue, Jan 15, 2019 at 04:03:32PM +0200, Laurentiu Tudor wrote:
> If the dma controller is not yet probed, defer i2c probe.
> The error path in probe was slightly modified (no functional change)
> to avoid triggering this WARN_ON():
> "cg-pll0-div1 already disabled
> WARNING: CPU: 1 PID: 1 at drivers/clk/clk.c:828 clk_core_disable+0xa8/0xb0"
> 
> Signed-off-by: Laurentiu Tudor <laurentiu.tudor@....com>

I just applied this series to i2c/for-next:

http://patchwork.ozlabs.org/project/linux-i2c/list/?series=85099&state=*

I haven't checked carefully but maybe it fixes/changes your issue? If
not, your patch most likely will need a rebase on top of the above.

Thanks,

   Wolfram


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