linux-kernel - Re: [PATCH] dmaengine: at_xdma: handle errors of at_xdmac_alloc

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Message-ID: <4060a926aba97cc1750d2964932ab40d@walle.cc>
Date:   Mon, 04 Jul 2022 17:09:02 +0200
From:   Michael Walle <michael@...le.cc>
To:     Ludovic Desroches <ludovic.desroches@...rochip.com>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Vinod Koul <vkoul@...nel.org>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>
Cc:     linux-arm-kernel@...ts.infradead.org, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dmaengine: at_xdma: handle errors of
 at_xdmac_alloc_desc() correctly

Am 2022-05-26 15:51, schrieb Michael Walle:
> It seems that it is valid to have less than the requested number of
> descriptors. But what is not valid and leads to subsequent errors is to
> have zero descriptors. In that case, abort the probing.
> 
> Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel
> eXtended DMA Controller driver")
> Signed-off-by: Michael Walle <michael@...le.cc>

ping :)