linux-kernel - Re: [PATCH v10 3/5] usb: xhci: Add support for Renesas controller with memory

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Date:   Thu, 30 Apr 2020 11:50:55 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Mathias Nyman <mathias.nyman@...ux.intel.com>
Cc:     Mathias Nyman <mathias.nyman@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-arm-msm@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Christian Lamparter <chunkeey@...glemail.com>,
        John Stultz <john.stultz@...aro.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Andreas Böhler <dev@...ehler.at>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v10 3/5] usb: xhci: Add support for Renesas controller
 with memory

On 29-04-20, 19:58, Vinod Koul wrote:
> On 29-04-20, 16:53, Mathias Nyman wrote:
> > On 24.4.2020 13.14, Vinod Koul wrote:

> > >  	/* Prevent runtime suspending between USB-2 and USB-3 initialization */
> > >  	pm_runtime_get_noresume(&dev->dev);
> > > @@ -388,6 +401,9 @@ static void xhci_pci_remove(struct pci_dev *dev)
> > >  {
> > >  	struct xhci_hcd *xhci;
> > >  
> > > +	if (renesas_device)
> > > +		renesas_xhci_pci_exit(dev);
> > > +
> > 
> > Ah, I see, what we really should do is make sure the quirks in the driver data get
> > added to xhci->quirks, and then just check for the correct quirk in xhci_pci_remove.
> 
> Ah sure that does sound better, I will update this as well and send an
> update with these changes

This works for me.. But I have kept the code as in the xhci_pci_probe(),
ofcourse removed bool renesas_device.

the xhci is not valid before invoking renesas_xhci_check_request_fw().
Is there another way to get xhci from dev without calling
usb_hcd_pci_probe().
xhci = hcd_to_xhci(hcd) doesn't seem to work before that!

-- 
~Vinod