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Tue, 10 Apr 2018 03:42:58 -0400 Received: from mga06.intel.com ([134.134.136.31]:57471 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752172AbeDJHm5 (ORCPT ); Tue, 10 Apr 2018 03:42:57 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.48,431,1517904000"; d="scan'208";a="32180976" Subject: Re: [PATCH] xhci: Fix USB ports for Dell Inspiron 5775 To: Kai Heng Feng , mathias.nyman@intel.com Cc: Greg KH , Linux USB Mailing List , Linux Kernel Mailing List , stable@vger.kernel.org References: <20180318151110.15308-1-kai.heng.feng@canonical.com> <7DBCE486-BE04-422B-9902-B9403AD85B37@canonical.com> From: Mathias Nyman Message-ID: Date: Tue, 10 Apr 2018 10:46:32 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: <7DBCE486-BE04-422B-9902-B9403AD85B37@canonical.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-usb-owner@vger.kernel.org X-Mailing-List: linux-usb@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On 10.04.2018 07:56, Kai Heng Feng wrote: > Hi Matthias, > >> On Mar 18, 2018, at 11:11 PM, Kai-Heng Feng wrote: >> >> The Dell Inspiron 5775 is a Raven Ridge. The Enable Slot command timed >> out when a USB device gets plugged: >> [ 212.156326] xhci_hcd 0000:03:00.3: Error while assigning device slot ID >> [ 212.156340] xhci_hcd 0000:03:00.3: Max number of devices this xHCI host supports is 64. >> [ 212.156348] usb usb2-port3: couldn't allocate usb_device >> >> AMD suggests that a delay before xHC suspends can fix the issue. >> >> I can confirm it fixes the issue, so use the suspend delay quirk for >> Raven Ridge's xHC. > > I am hoping this patch can get merged in v4.17... > > Thanks, > Kai-Heng > Added to queue, sending after rc1 -Mathias