linux-kernel - Re: [PATCH] i2c: stm32: do not display error when DMA is not requested

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Message-ID: <20200910100607.GJ1031@ninjato>
Date:   Thu, 10 Sep 2020 12:06:07 +0200
From:   Wolfram Sang <wsa@...nel.org>
To:     Alain Volmat <alain.volmat@...com>
Cc:     pierre-yves.mordret@...com, alexandre.torgue@...com,
        linux-i2c@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        fabrice.gasnier@...com
Subject: Re: [PATCH] i2c: stm32: do not display error when DMA is not
 requested

On Thu, Sep 10, 2020 at 11:32:29AM +0200, Alain Volmat wrote:
> DMA usage is optional for the I2C driver. check for the -ENODEV
> error in order to avoid displaying an error when no DMA
> has been requested.
> 
> Signed-off-by: Alain Volmat <alain.volmat@...com>
> ---
> This patch should be applied on top of the patch [i2c: stm32: Simplify with dev_err_probe()]

We can do it in this order, it just makes backporting to stable kernels
(if that is desired) a bit harder than a self-contained patch. I am fine
with both approaches, but just wanted to point it out.


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