From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0E9D5C433EF for ; Fri, 22 Oct 2021 08:53:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E38DB610CF for ; Fri, 22 Oct 2021 08:53:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232279AbhJVIzu (ORCPT ); Fri, 22 Oct 2021 04:55:50 -0400 Received: from mail.kernel.org ([198.145.29.99]:52960 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231984AbhJVIzt (ORCPT ); Fri, 22 Oct 2021 04:55:49 -0400 Received: by mail.kernel.org (Postfix) with ESMTPS id 8DA3A610CF for ; Fri, 22 Oct 2021 08:53:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1634892812; bh=ADmpdBRjCUmaTI+1yifrnpntfi9dFWb8XC4sJwCSqpA=; h=From:To:Subject:Date:In-Reply-To:References:From; b=Sz2ym/BgBWJyo4zzY1eX6hpLFqVRmptMifdftD/bJSYoxeom4LRMIoUaaQP20srlZ Ka1Tyw2Zv/26Xqupxqm28AFGDVPrJJCi48EN+otLajYlNvtnMq+BPA6WEHeB9xzyJu tEdvVpC9NCAirIn/uRrpaO1cZr8oZW3CJOvSbHeOn15DHex9qLDZzxsBt0m9j3tdMO Lc17idGN9D046U4Mju4NqEb+F+bFsQwwJ0ObF+m0b7fgSGcqR9bb/9/d5deDJum6xc +bi1rP5QQZIa3YVY7lyMViZxSqx8joDH15LUgJLS3SeUvIAFmVH/n1JZNKL53PCuxi oewbjcA2ZRGHQ== From: bugzilla-daemon@bugzilla.kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 214789] ehci-hcd.c ISR Date: Fri, 22 Oct 2021 08:53:32 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: USB X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: high X-Bugzilla-Who: johan@kernel.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: drivers_usb@kernel-bugs.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D214789 --- Comment #10 from Johan Hovold (johan@kernel.org) --- On Thu, Oct 21, 2021 at 08:04:06PM +0000, bugzilla-daemon@bugzilla.kernel.o= rg wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=3D214789 >=20 > --- Comment #9 from Scott Arnold (scott.c.arnold@nasa.gov) --- > Hello, > The timing card driver receives no interrupts according to debug. > IRQ16: IO-APIC 16-fasteoi ehci_hcd:usb1, hpilo, rt_pcclk So the IRQ is also shared with some (mainline) HP management-processor driver (hpilo). > Ehci_hcd entries in /sys/kernel/debug/usb/devices: >=20 > T: Bus=3D01 Lev=3D00 Prnt=3D00 Port=3D00 Cnt=3D00 Dev#=3D 1 Spd=3D480 = MxCh=3D 2 > B: Alloc=3D 0/800 us ( 0%), #Int=3D 4, #Iso=3D 0 > D: Ver=3D 2.00 Cls=3D09(hub ) Sub=3D00 Prot=3D00 MxPS=3D64 #Cfgs=3D 1 > P: Vendor=3D1d6b ProdID=3D0002 Rev=3D 5.11 > S: Manufacturer=3DLinux 5.11.17_OBCS_1 ehci_hcd > S: Product=3DEHCI Host Controller > S: SerialNumber=3D0000:00:1a.0 > C:* #Ifs=3D 1 Cfg#=3D 1 Atr=3De0 MxPwr=3D 0mA > I:* If#=3D 0 Alt=3D 0 #EPs=3D 1 Cls=3D09(hub ) Sub=3D00 Prot=3D00 Driver= =3Dhub > E: Ad=3D81(I) Atr=3D03(Int.) MxPS=3D 4 Ivl=3D256ms Just to be clear: Are there any USB devices physically connected to this bus? What does "lsusb -s1:" say? > I have not tried enabling debug in ehci_hcd yet. Try adding WARN_ON_ONCE(!irqs_disabled()); at the start of ehci_irq() before grabbing the lock. That should give us a stack dump in case there's someone calling the interrupt handler with interrupts enabled (which seems to be the case). Johan --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=