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 7FDB0C433EF for ; Thu, 21 Oct 2021 19:27:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3720861221 for ; Thu, 21 Oct 2021 19:27:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230437AbhJUTaG (ORCPT ); Thu, 21 Oct 2021 15:30:06 -0400 Received: from mail.kernel.org ([198.145.29.99]:43722 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230020AbhJUTaG (ORCPT ); Thu, 21 Oct 2021 15:30:06 -0400 Received: by mail.kernel.org (Postfix) with ESMTPS id E497B61213 for ; Thu, 21 Oct 2021 19:27:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1634844469; bh=SAQZFVKqSJW6AQR5cjoqIcHivNSmt60OCX7KgN50/WY=; h=From:To:Subject:Date:In-Reply-To:References:From; b=gashT1J2PWOyazD6xKb9AnWuIO6YYlEf+9ZNrpJmPgleq/w8LxO31yHcUPggFMiq+ lrKFUkJPidi1AcEu0JajJFu1VPvDZXOmM1dqEu+oe8GDEc6gqmtxjYlewHx8EVnJcS S5QNLLGXxYc2TQ0AfYpRul3Yvb4ic49D3ivc/27N81eAXisT4rjja/9foO7rZ2Lr0F CmNv/65P+GuY0/TYr5fxs068oJbgCcLxHgJfCpCyF2RPQBWDjJFfi0c5v+xYBcf/cl Igf/U+CxK+eC8iU3SELc+J4RjPGGwQLsO90wFVE8mV5oyE3LmAdaSqGBD9jxNyrDL4 ysQXkwgsL5+Gg== From: bugzilla-daemon@bugzilla.kernel.org To: linux-usb@vger.kernel.org Subject: [Bug 214789] ehci-hcd.c ISR Date: Thu, 21 Oct 2021 19:27:49 +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: stern@rowland.harvard.edu 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 #5 from Alan Stern (stern@rowland.harvard.edu) --- Okay, but _why_ don't the timing card's interrupts get handled when ehci_irq uses spin_lock? 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. --=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.=