linux-kernel - Re: [PATCH v6] MIPS: Loongson: Add DMA support for LS7A

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Message-ID: <20200506144208.GD27643@infradead.org>
Date:   Wed, 6 May 2020 07:42:08 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Huacai Chen <chenhc@...ote.com>
Cc:     Tiezhu Yang <yangtiezhu@...ngson.cn>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Christoph Hellwig <hch@...radead.org>,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        "open list:MIPS" <linux-mips@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Xuefeng Li <lixuefeng@...ngson.cn>
Subject: Re: [PATCH v6] MIPS: Loongson: Add DMA support for LS7A

On Wed, May 06, 2020 at 04:47:30PM +0800, Huacai Chen wrote:
> > For the above reasons, I think what you are concerned is not a
> > big deal.
> I don't think so, this is obviously a regression. If we can accept a
> regression of RS780E, why we still maintain Loongson-2EF rather than
> simply drop them?

While I much prefer to use the default, regression an otherwise
working platform seems like a bad idea.  I don't really know much
about the Loongson platforms, do they all boot using the same kernel
image?