linux-kernel - Re: [PATCH] usb: bdc: Remove the BDC PCI driver

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Date:   Mon, 18 Jan 2021 12:37:00 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Felipe Balbi <balbi@...nel.org>
Cc:     Al Cooper <alcooperx@...il.com>, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com, linux-usb@...r.kernel.org,
        Patrik Jakobsson <patrik.r.jakobsson@...il.com>
Subject: Re: [PATCH] usb: bdc: Remove the BDC PCI driver

On Mon, Jan 18, 2021 at 01:30:36PM +0200, Felipe Balbi wrote:
> 
> Hi,
> 
> Al Cooper <alcooperx@...il.com> writes:
> > The BDC PCI driver was only used for design verification with
> > an PCI/FPGA board. The board no longer exists and is not in use
> > anywhere. All instances of this core now exist as a memory mapped
> > device on the platform bus.
> >
> > NOTE: This only removes the PCI driver and does not remove the
> > platform driver.
> >
> > Signed-off-by: Al Cooper <alcooperx@...il.com>
> 
> It sounds like it could be used for pre-silicon verification of newer
> Core Releases, much like Synopsys still uses the HAPS (with mainline
> linux, mind you) for silicon validation.
> 
> Why would we delete this small shim if it *could* still be useful?

It ends up conflicting with the PCI id of a device that is actually in
the wild (a camera on Apple laptops).  So it's good to drop this driver
so the wrong driver doesn't get constantly bound to the wrong device.

thnaks,

greg k-h