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Date:   Mon, 28 Mar 2022 09:35:30 +0200
From:   Michael Walle <michael@walle.cc>
To:     Codrin Ciubotariu <codrin.ciubotariu@microchip.com>,
        Nicolas Ferre <nicolas.ferre@microchip.com>,
        Alexandre Belloni <alexandre.belloni@bootlin.com>,
        Claudiu Beznea <claudiu.beznea@microchip.com>,
        Sumit Semwal <sumit.semwal@linaro.org>,
        =?UTF-8?Q?Christian_K=C3=B6nig?= <christian.koenig@amd.com>
Cc:     linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
        dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org,
        stable@vger.kernel.org
Subject: Re: [PATCH] i2c: at91: use dma safe buffers
In-Reply-To: <20220303161724.3324948-1-michael@walle.cc>
References: <20220303161724.3324948-1-michael@walle.cc>
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Hi all,

Am 2022-03-03 17:17, schrieb Michael Walle:
> The supplied buffer might be on the stack and we get the following 
> error
> message:
> [    3.312058] at91_i2c e0070600.i2c: rejecting DMA map of vmalloc 
> memory
> 
> Use i2c_{get,put}_dma_safe_msg_buf() to get a DMA-able memory region if
> necessary.
> 
> Cc: stable@vger.kernel.org
> Signed-off-by: Michael Walle <michael@walle.cc>

Any news here?

> ---
> 
> I'm not sure if or which Fixes: tag I should add to this patch. The 
> issue
> seems to be since a very long time, but nobody seem to have triggered 
> it.
> FWIW, I'm using the sff,sfp driver, which triggers this.

-michael