Re: [PATCH 1/6] usb: dwc3: Support Synopsys USB 3.1 IP

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On 10/2/2015 5:33 PM, Felipe Balbi wrote:
> On Sat, Oct 03, 2015 at 12:02:54AM +0200, Greg KH wrote:
>> On Fri, Oct 02, 2015 at 02:21:01PM -0500, Felipe Balbi wrote:
>>>> We're trying to avoid the situation where where we have to ship
>>>> patches or maintain a separate kernel tree.
>>>>
>>>> Do you have any objections to these going into stable?
>>>
>>> I'm not the one you need to convince. That would be Greg :-)
>>
>> What's the git commit id of the patch in Linus's tree?
> 
> the patch doesn't exist yet. John sent a series wich I don't feel it fits
> stable. The new device IDs, sure, but all the other changes which, granted, are
> related, but don't seem like stable material IMO.
> 
> For reference, here are all the patches:
> 
> http://www.spinics.net/lists/linux-usb/msg130712.html
> http://www.spinics.net/lists/linux-usb/msg130711.html
> http://www.spinics.net/lists/linux-usb/msg130717.html
> http://www.spinics.net/lists/linux-usb/msg130713.html
> http://www.spinics.net/lists/linux-usb/msg130716.html
> http://www.spinics.net/lists/linux-usb/msg130714.html
> 

Hi Greg,

I'm in the process of simplifying and resubmitting these.

But to summarize, these are all small changes to get newer
hardware to work with older drivers and to address failures
with certain hardware for compliance testing.

Patch 1 allows the dwc3 driver to work with newer hardware. An ID
register in the hardware has changed causing the probe to
fail. And we ensure the new version numbers are higher than
older versions.

Patch 2-3 adds PCI Device IDs so that dwc3 will load with various
versions of our hardware.

Patch 4 adds the correct driver parameters for our hardware.

Patch 5 adds a quirk for a problem with some PHYs.

Patch 6 is not tagged for stable (formatting only).

Are these kind of changes appropriate for stable?

The reason we want them in stable is because we have some
products that are stuck on 3.18 currently and later will be
updated to 4.2.

Regards,
John




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