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Mon, 7 May 2018 08:43:57 -0400 Received: from mga05.intel.com ([192.55.52.43]:44043 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751848AbeEGMnz (ORCPT ); Mon, 7 May 2018 08:43:55 -0400 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,373,1520924400"; d="scan'208";a="39030297" Date: Mon, 7 May 2018 15:43:49 +0300 From: Mika Westerberg To: Sinan Kaya Cc: linux-pci@vger.kernel.org, timur@codeaurora.org, sulrich@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, stable@vger.kernel.org, Bjorn Helgaas , Greg Kroah-Hartman , Kees Cook , Markus Elfring , Keith Busch , Lukas Wunner , open list Subject: Re: [PATCH] PCI: pciehp: Add quirk for QDF2400 Command Completed erratum Message-ID: <20180507124349.GC2879@lahna.fi.intel.com> References: <1525602662-1873-1-git-send-email-okaya@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1525602662-1873-1-git-send-email-okaya@codeaurora.org> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo User-Agent: Mutt/1.9.3 (2018-01-21) Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Sun, May 06, 2018 at 06:30:53AM -0400, Sinan Kaya wrote: > The QDF2400 controller does not set the Command Completed bit unless > writes to the Slot Command register change "Control" bits. Command > Completed is never set for writes that only change software notification > "Enable" bits. This results in timeouts like this: > > pciehp 0000:00:00.0:pcie004: Timeout on hotplug command 0x1038 > > Cc: stable@vger.kernel.org > Signed-off-by: Sinan Kaya Reviewed-by: Mika Westerberg