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 E9890C433F5 for ; Thu, 21 Oct 2021 19:38:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C065E60F50 for ; Thu, 21 Oct 2021 19:38:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231182AbhJUTkY (ORCPT ); Thu, 21 Oct 2021 15:40:24 -0400 Received: from mail.kernel.org ([198.145.29.99]:51306 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230020AbhJUTkN (ORCPT ); Thu, 21 Oct 2021 15:40:13 -0400 Received: by mail.kernel.org (Postfix) with ESMTPS id BBAB160EE9 for ; Thu, 21 Oct 2021 19:37:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1634845076; bh=OgYhVxnVvZZSUC2kTr61g0ZXc7NqAefeesi2u88KIkM=; h=From:To:Subject:Date:In-Reply-To:References:From; b=jfh2eT6h0S2BciP/q8QZi/K2tlrHAz0d2MF/zZrnaf04gXSt6anWBIo2lJampzOMa gX/dDNSVMLCFV0vywMTpMscW/egtrkPkl6UeoiZ9ymT5eZts9uSA/b9ejxuetrDoPe WSAzkylJmz5J3wKFb3QhP9UtFrF7MUoaVj/G8CnJRH1k6SEPHlizQyNFMF8q+/6AsC muQnH90QBSsfUUZadW/bS2Z+grULCC7InJuFAspH7yEJ6ZJTaZPpPcLpXbeIMvvu9A AvA9WXIeiwjg5teNAqq5zSLNZG2zSUtMTXmcnSvDnChS2wAvq+KpqXTYA/sAbTXkGe /DNKEFCYRqU2A== From: bugzilla-daemon@bugzilla.kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 214789] ehci-hcd.c ISR Date: Thu, 21 Oct 2021 19:37:56 +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: scott.c.arnold@nasa.gov 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 #7 from Scott Arnold (scott.c.arnold@nasa.gov) --- Anything you want me to try while I have the hardware available? -----Original Message----- From: bugzilla-daemon@bugzilla.kernel.org =20 Sent: Thursday, October 21, 2021 2:28 PM To: Arnold, Scott C. (JSC-CD13)[SGT, INC] Subject: [EXTERNAL] [Bug 214789] ehci-hcd.c ISR https://gcc02.safelinks.protection.outlook.com/?url=3Dhttps%3A%2F%2Fbugzill= a.kernel.org%2Fshow_bug.cgi%3Fid%3D214789&data=3D04%7C01%7Cscott.c.arno= ld%40nasa.gov%7C551e718474f3400d4b2508d994c8e126%7C7005d45845be48ae8140d43d= a96dd17b%7C0%7C0%7C637704412758963825%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wL= jAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=3Dqr= laDQOIszpc5Q%2BNbQUxzpDh%2FIyBIvCclogFe2OAAm0%3D&reserved=3D0 --- Comment #5 from Alan Stern (stern@rowland.harvard.edu) --- Okay, but _w= hy_ don't the timing card's interrupts get handled when ehci_irq uses spin_lock= ?=20 And _why_ does changing to spin_lock_irqsave make a difference? Do all of the card's interrupt requests get lost or only some of them? Are you somehow getting recursive (nested) interrupts for the same IRQ line? Is ehci_irq somehow getting called with interrupts enabled? I don't want to make any changes to the driver until we know the answers to these questions. -- You may reply to this email to add a comment. You are receiving this mail because: You reported the bug. --=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.=