From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Shevchenko Subject: Re: [RFC PATCH 0/2] serial: 8250_dw: IO space + polling mode support Date: Mon, 26 Feb 2018 17:02:45 +0200 Message-ID: <1519657365.10722.187.camel@linux.intel.com> References: <1519324923-196857-1-git-send-email-john.garry@huawei.com> <1519381801.10722.103.camel@linux.intel.com> <3c4c5f58-a661-13c8-cc1c-8d43828982cb@huawei.com> <1519407117.10722.124.camel@linux.intel.com> <88214a3e-82cc-c931-804c-7dc90fb8721f@huawei.com> <1519638828.10722.153.camel@linux.intel.com> <7221877b-a84a-63a1-ef86-1991f358df72@huawei.com> <1519644517.10722.179.camel@linux.intel.com> <1519647669.10722.184.camel@linux.intel.com> <1519648063.10722.185.camel@linux.intel.com> <22270a6a-44fb-d2ad-d6d3-3d301bdde26e@huawei.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <22270a6a-44fb-d2ad-d6d3-3d301bdde26e@huawei.com> Sender: linux-kernel-owner@vger.kernel.org To: John Garry , gregkh@linuxfoundation.org, jslaby@suse.com, p.zabel@pengutronix.de, heiko@sntech.de, ed.blake@sondrel.com, jhogan@kernel.org Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, linuxarm@huawei.com List-Id: linux-serial@vger.kernel.org On Mon, 2018-02-26 at 13:15 +0000, John Garry wrote: > On 26/02/2018 12:27, Andy Shevchenko wrote: > > On Mon, 2018-02-26 at 14:21 +0200, Andy Shevchenko wrote: > > > On Mon, 2018-02-26 at 11:56 +0000, John Garry wrote: > > > > > > > > Device (LPC0.CON0) { > > > > Name (_HID, "HISI1031") > > > > // Name (_CID, "PNP0501") // cannot support PNP > > > > > > One more question. What is the problem with this CID? Do you have a > > race > > condition in enumeration? > > > > Hi Andy, > > Not sure if race condition exactly. I tried enabling this CID and a > pnp > device is created in pnpacpi_add_device_handler(), while we have > already > marked the corresponding acpi_device to skip enumeration in ACPI scan > handler (by flagging it as a serial bus slave). Is that code already in upstream? If no, please, Cc next version to me and possible Mika. -- Andy Shevchenko Intel Finland Oy