From: Jesse Hathaway <jesse@mbuki-mvuki.org>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Bjorn Helgaas <helgaas@kernel.org>,
Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
Mathias Nyman <mathias.nyman@intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org
Subject: Re: Regression causes a hang on boot with a Comtrol PCI card
Date: Thu, 4 Apr 2019 10:41:29 -0500 [thread overview]
Message-ID: <CANSNSoXOmExO2RSp1gS8myUuiDpva4=0GeGpv+t8+X9p0u0H_w@mail.gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1904021028110.1562-100000@iolanthe.rowland.org>
On Tue, Apr 2, 2019 at 9:29 AM Alan Stern <stern@rowland.harvard.edu> wrote:
> Most likely the problem occurs somewhere inside
> quirk_usb_handoff_xhci(). Can Jesse add debugging statements to that
> routine in order to pin down exactly where the problem lies?
Alan,
I added debug statements to quirk_usb_early_handoff, quirk_usb_disable_ehci &
ehci_bios_handoff. The box hangs right before calling:
pci_write_config_byte(pdev, offset + 3, 1);
which is in ehci_bios_handoff:
[ 10.698240] DEBUG: Passed quirk_usb_early_handoff 1300
[ 10.704271] DEBUG: Passed quirk_usb_early_handoff 1308
[ 10.710206] DEBUG: Passed quirk_usb_disable_ehci 939
[ 10.715949] DEBUG: Passed quirk_usb_disable_ehci 945
[ 10.721685] DEBUG: Passed quirk_usb_disable_ehci 950
[ 10.727423] DEBUG: Passed quirk_usb_disable_ehci 958
[ 10.733160] DEBUG: Passed quirk_usb_disable_ehci 964
[ 10.738897] DEBUG: Passed quirk_usb_disable_ehci 968
[ 10.744633] DEBUG: Passed ehci_bios_handoff 849
[ 10.749884] DEBUG: Passed ehci_bios_handoff 884
I have attached the debug output, and my modified pci-quirks.c file
to the bug report, let me know what else I can do to help.
next prev parent reply other threads:[~2019-04-04 15:41 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-13 16:50 Regression causes a hang on boot with a Comtrol PCI card Jesse Hathaway
2019-03-13 23:21 ` Bjorn Helgaas
2019-03-14 20:57 ` Jesse Hathaway
2019-03-21 20:36 ` Jesse Hathaway
2019-03-21 23:23 ` Bjorn Helgaas
2019-03-22 20:02 ` Jesse Hathaway
2019-04-01 19:43 ` Jesse Hathaway
2019-04-01 21:13 ` Bjorn Helgaas
2019-04-02 14:29 ` Alan Stern
2019-04-02 14:49 ` Mathias Nyman
2019-04-02 18:26 ` Alan Stern
2019-04-04 15:41 ` Jesse Hathaway [this message]
2019-04-04 17:16 ` Alan Stern
2019-04-04 17:36 ` Jesse Hathaway
2019-04-04 19:14 ` Alan Stern
2019-04-05 21:27 ` Jesse Hathaway
2019-04-06 15:32 ` Alan Stern
2019-04-15 21:47 ` Jesse Hathaway
2019-04-16 15:00 ` Alan Stern
2019-04-23 20:18 ` Jesse Hathaway
2019-04-24 14:20 ` Alan Stern
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