linux-kernel - Re: [PATCH 1/5] usb: xhci: cleanup xhci

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Message-ID: <CAL1qeaHUbRm9NBSYdkdjQjELwRaJ4z8s0XfZnPED7Qp-mZ017w@mail.gmail.com>
Date:	Tue, 26 May 2015 09:31:51 -0700
From:	Andrew Bresticker <abrestic@...omium.org>
To:	Mathias Nyman <mathias.nyman@...ux.intel.com>
Cc:	Roger Quadros <rogerq@...com>,
	Mathias Nyman <mathias.nyman@...el.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/5] usb: xhci: cleanup xhci_hcd allocation

Hi Mathias,

On Mon, May 25, 2015 at 8:05 AM, Mathias Nyman
<mathias.nyman@...ux.intel.com> wrote:
>>>>>
>>>>> I've been testing add/remove HCD extensively and didn't observe any issues after applying
>>>>> these 5 patches. Well there is one issue that comes up but it has nothing to do with xhci
>>>>> not being allocated. It has more to do with command being queued after the HCD has gone away
>>>>> and so getting stuck forever without timing out.
>>>>
>>>> I went through the codepaths and you're right, should work fine. My concern wasn't valid.
>>>> This patchset doesn't even touch the order how primary and shared HCDs are created and added
>>>> in the PCI case, only for the platform device case.
>>>>
>>>> I'll try it out and send forward once rc1 is out.
>>>
>>> did you get a chance to try this series?
>>>
>>
>> Sorry, not yet, got delayed by other internal tasks.
>> I'll try it out as soon as possible.
>>
>>
>
> Ok, back to this, I'd like to get both this series and Andrew's xhci-tegra
> support to 4.2
>
> I did similar changes to xhci-tegra.c as Roger did to xhci-pci.c and xhci-plat.c,
> but I can't test them and would need both your eyes on this to make sure it looks ok.
>
> Both series are in a tegra_otg_merge topic branch in:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/mnyman/xhci.git tegra_otg_merge
>
> It contains Andrews full xhci tegra support series, but If I understood correctly only
> patch 9/9 (maybe 8/9 as well?) will actually go through the xhci tree.
> Patch 1/9 is not needed with Roger's changes anymre
>
> The changes are in the last patch, here:
> https://git.kernel.org/cgit/linux/kernel/git/mnyman/xhci.git/commit/?h=tegra_otg_merge
>
> and would be squashed together with patch 9/9.

No need to apply patch 8/9 or 9/9... Lee Jones has NAK'ed the MFD
driver on which the xhci-tegra driver depends, so I'll need to re-spin
the series.  It would be great if you could ACK those two patches
though so that the entire series could go through the Tegra tree for
4.3.

Thanks,
Andrew
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