netdev - Re: [resend/standalone PATCH v4] Add auxiliary bus support

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Date:   Thu, 3 Dec 2020 16:06:24 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Dan Williams <dan.j.williams@...el.com>
Cc:     broonie@...nel.org, lgirdwood@...il.com, davem@...emloft.net,
        kuba@...nel.org, jgg@...dia.com,
        Kiran Patil <kiran.patil@...el.com>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Fred Oh <fred.oh@...ux.intel.com>,
        Leon Romanovsky <leonro@...dia.com>,
        Dave Ertman <david.m.ertman@...el.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Shiraz Saleem <shiraz.saleem@...el.com>,
        Parav Pandit <parav@...lanox.com>,
        Martin Habets <mhabets@...arflare.com>,
        linux-rdma@...r.kernel.org, netdev@...r.kernel.org,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Subject: Re: [resend/standalone PATCH v4] Add auxiliary bus support

On Wed, Dec 02, 2020 at 04:54:24PM -0800, Dan Williams wrote:
> From: Dave Ertman <david.m.ertman@...el.com>
> 
> Add support for the Auxiliary Bus, auxiliary_device and auxiliary_driver.
> It enables drivers to create an auxiliary_device and bind an
> auxiliary_driver to it.
> 
> The bus supports probe/remove shutdown and suspend/resume callbacks.
> Each auxiliary_device has a unique string based id; driver binds to
> an auxiliary_device based on this id through the bus.
> 
> Co-developed-by: Kiran Patil <kiran.patil@...el.com>
> Co-developed-by: Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>
> Co-developed-by: Fred Oh <fred.oh@...ux.intel.com>
> Co-developed-by: Leon Romanovsky <leonro@...dia.com>
> Signed-off-by: Kiran Patil <kiran.patil@...el.com>
> Signed-off-by: Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>
> Signed-off-by: Fred Oh <fred.oh@...ux.intel.com>
> Signed-off-by: Leon Romanovsky <leonro@...dia.com>
> Signed-off-by: Dave Ertman <david.m.ertman@...el.com>
> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
> Reviewed-by: Shiraz Saleem <shiraz.saleem@...el.com>
> Reviewed-by: Parav Pandit <parav@...lanox.com>
> Reviewed-by: Dan Williams <dan.j.williams@...el.com>
> Reviewed-by: Martin Habets <mhabets@...arflare.com>
> Link: https://lore.kernel.org/r/20201113161859.1775473-2-david.m.ertman@intel.com
> Signed-off-by: Dan Williams <dan.j.williams@...el.com>
> ---
> This patch is "To:" the maintainers that have a pending backlog of
> driver updates dependent on this facility, and "Cc:" Greg. Greg, I
> understand you have asked for more time to fully review this and apply
> it to driver-core.git, likely for v5.12, but please consider Acking it
> for v5.11 instead. It looks good to me and several other stakeholders.
> Namely, stakeholders that have pressure building up behind this facility
> in particular Mellanox RDMA, but also SOF, Intel Ethernet, and later on
> Compute Express Link.
> 
> I will take the blame for the 2 months of silence that made this awkward
> to take through driver-core.git, but at the same time I do not want to
> see that communication mistake inconvenience other parties that
> reasonably thought this was shaping up to land in v5.11.
> 
> I am willing to host this version at:
> 
> git://git.kernel.org/pub/scm/linux/kernel/git/djbw/linux tags/auxiliary-bus-for-5.11
> 
> ...for all the independent drivers to have a common commit baseline. It
> is not there yet pending Greg's Ack.

I have been trying to carve out some time to review this.  At my initial
glance, I still have objections, so please, give me a few more days to
get this done...

thanks,

greg k-h