From: Bjorn Helgaas <helgaas@kernel.org>
To: Thinh Nguyen <thinh.nguyen@synopsys.com>
Cc: Lukas Wunner <lukas@wunner.de>,
"Lukas F. Hartmann" <lukas@mntmn.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Lucas Stach <l.stach@pengutronix.de>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
John Youn <john.youn@synopsys.com>
Subject: Re: Linux Kernel Regression: HAPS quirk breaks PCIe on i.MX6QP
Date: Tue, 5 Feb 2019 14:09:57 -0600 [thread overview]
Message-ID: <20190205200957.GA7268@google.com> (raw)
In-Reply-To: <30102591E157244384E984126FC3CB4F639BF351@us01wembx1.internal.synopsys.com>
On Fri, Feb 01, 2019 at 08:27:00PM +0000, Thinh Nguyen wrote:
> Lukas Wunner wrote:
> > On Thu, Jan 31, 2019 at 11:46:23PM +0000, Thinh Nguyen wrote:
> >> --- a/drivers/pci/quirks.c
> >> +++ b/drivers/pci/quirks.c
> >> @@ -629,6 +629,9 @@ static void quirk_synopsys_haps(struct pci_dev *pdev)
> >> {
> >> u32 class = pdev->class;
> >>
> >> + if (class != PCI_CLASS_SERIAL_USB_XHCI)
> >> + return;
> >> +
> >> switch (pdev->device) {
> >> case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3:
> >> case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI:
> > Please use DECLARE_PCI_FIXUP_CLASS_HEADER() instead.
>
> Sure. That's a better option. Can you test this with your setup?
>
> diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
> index b0a413f3f7ca..f46e7de9e15d 100644
> --- a/drivers/pci/quirks.c
> +++ b/drivers/pci/quirks.c
> @@ -639,8 +639,8 @@ static void quirk_synopsys_haps(struct pci_dev *pdev)
> break;
> }
> }
> -DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SYNOPSYS, PCI_ANY_ID,
> - quirk_synopsys_haps);
> +DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_SYNOPSYS, PCI_ANY_ID,
> + PCI_CLASS_SERIAL_USB_XHCI, 0, quirk_synopsys_haps);
>
> /*
> * Let's make the southbridge information explicit instead of having to
>
>
Can we get a formal patch, including details about the issue (I assume
Synopsys released two different parts with Device ID 0xabcd) and a
signed-off-by?
I'd like to get this into for-linus as soon as possible for v5.0.
Bjorn
next prev parent reply other threads:[~2019-02-05 20:10 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <87o97wrbef.fsf@mntmn.com>
2019-01-31 21:49 ` Linux Kernel Regression: HAPS quirk breaks PCIe on i.MX6QP Bjorn Helgaas
2019-01-31 22:50 ` Thinh Nguyen
2019-01-31 23:46 ` Thinh Nguyen
2019-02-01 8:05 ` Lukas Hartmann
2019-02-01 20:22 ` Thinh Nguyen
2019-02-01 8:59 ` Lukas Wunner
2019-02-01 20:27 ` Thinh Nguyen
2019-02-05 20:09 ` Bjorn Helgaas [this message]
2019-02-05 20:38 ` Thinh Nguyen
2019-02-05 20:59 ` Bjorn Helgaas
2019-02-05 21:02 ` Thinh Nguyen
2019-02-05 21:33 ` Thinh Nguyen
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