From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:37604 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934235AbdAIJd6 (ORCPT ); Mon, 9 Jan 2017 04:33:58 -0500 Subject: Patch "usb: dwc3: core: avoid Overflow events" has been added to the 4.9-stable tree To: felipe.balbi@linux.intel.com, gregkh@linuxfoundation.org Cc: , From: Date: Mon, 09 Jan 2017 10:33:34 +0100 Message-ID: <14839544144997@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled usb: dwc3: core: avoid Overflow events to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: usb-dwc3-core-avoid-overflow-events.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From e71d363d9c611c99fb78f53bfee99616e7fe352c Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 23 Dec 2016 14:40:40 +0200 Subject: usb: dwc3: core: avoid Overflow events From: Felipe Balbi commit e71d363d9c611c99fb78f53bfee99616e7fe352c upstream. Now that we're handling so many transfers at a time and for some dwc3 revisions LPM events *must* be enabled, we can fall into a situation where too many events fire and we start receiving Overflow events. Let's do what XHCI does and allocate a full page for the Event Ring, this will avoid any future issues. Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/dwc3/core.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -43,9 +43,7 @@ #define DWC3_XHCI_RESOURCES_NUM 2 #define DWC3_SCRATCHBUF_SIZE 4096 /* each buffer is assumed to be 4KiB */ -#define DWC3_EVENT_SIZE 4 /* bytes */ -#define DWC3_EVENT_MAX_NUM 64 /* 2 events/endpoint */ -#define DWC3_EVENT_BUFFERS_SIZE (DWC3_EVENT_SIZE * DWC3_EVENT_MAX_NUM) +#define DWC3_EVENT_BUFFERS_SIZE 4096 #define DWC3_EVENT_TYPE_MASK 0xfe #define DWC3_EVENT_TYPE_DEV 0 Patches currently in stable-queue which might be from felipe.balbi@linux.intel.com are queue-4.9/usb-dummy-hcd-fix-bug-in-stop_activity-handle-ep0.patch queue-4.9/usb-dwc3-core-avoid-overflow-events.patch queue-4.9/usb-gadgetfs-fix-use-after-free-bug.patch queue-4.9/usb-gadget-composite-test-get_alt-presence-instead-of-set_alt.patch queue-4.9/usb-gadgetfs-restrict-upper-bound-on-device-configuration-size.patch queue-4.9/usb-gadgetfs-fix-checks-of-wtotallength-in-config-descriptors.patch queue-4.9/usb-gadgetfs-fix-unbounded-memory-allocation-bug.patch