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 X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B770EC43381 for ; Wed, 27 Feb 2019 16:57:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8D12D20823 for ; Wed, 27 Feb 2019 16:57:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727488AbfB0Q5s (ORCPT ); Wed, 27 Feb 2019 11:57:48 -0500 Received: from bhuna.collabora.co.uk ([46.235.227.227]:48000 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726389AbfB0Q5s (ORCPT ); Wed, 27 Feb 2019 11:57:48 -0500 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: ezequiel) with ESMTPSA id 2EB6E260E16 From: Ezequiel Garcia To: linux-media@vger.kernel.org Cc: Hans Verkuil , kernel@collabora.com, Ezequiel Garcia Subject: [PATCH] gspca: Kill URBs on USB device disconnect Date: Wed, 27 Feb 2019 13:56:43 -0300 Message-Id: <20190227165643.5571-1-ezequiel@collabora.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org In order to prevent ISOC URBs from being infinitely resubmitted, the driver's USB disconnect handler must kill all the in-flight URBs. While here, change the URB packet status message to a debug level, to avoid spamming the console too much. This commit fixes a lockup caused by an interrupt storm coming from the URB completion handler. Signed-off-by: Ezequiel Garcia --- drivers/media/usb/gspca/gspca.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/media/usb/gspca/gspca.c b/drivers/media/usb/gspca/gspca.c index 9448ac0b8bc9..0510c20273aa 100644 --- a/drivers/media/usb/gspca/gspca.c +++ b/drivers/media/usb/gspca/gspca.c @@ -294,7 +294,7 @@ static void fill_frame(struct gspca_dev *gspca_dev, /* check the packet status and length */ st = urb->iso_frame_desc[i].status; if (st) { - pr_err("ISOC data error: [%d] len=%d, status=%d\n", + gspca_dbg(gspca_dev, D_PACK, "ISOC data error: [%d] len=%d, status=%d\n", i, len, st); gspca_dev->last_packet_type = DISCARD_PACKET; continue; @@ -1642,6 +1642,7 @@ void gspca_disconnect(struct usb_interface *intf) mutex_lock(&gspca_dev->usb_lock); gspca_dev->present = false; + destroy_urbs(gspca_dev); vb2_queue_error(&gspca_dev->queue); -- 2.20.1