Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752795AbdLEPlC convert rfc822-to-8bit (ORCPT ); Tue, 5 Dec 2017 10:41:02 -0500 Received: from mail.fireflyinternet.com ([109.228.58.192]:59132 "EHLO fireflyinternet.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752515AbdLEPlB (ORCPT ); Tue, 5 Dec 2017 10:41:01 -0500 X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8BIT To: Daniel Vetter , "Sean Paul" From: Chris Wilson In-Reply-To: <20171205153436.57efslvedeo63guu@phenom.ffwll.local> Cc: seanpaul@google.com, "David Airlie" , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, daniel.vetter@intel.com References: <20171205051513.8603-1-seanpaul@chromium.org> <20171205051513.8603-4-seanpaul@chromium.org> <20171205153436.57efslvedeo63guu@phenom.ffwll.local> Message-ID: <151248844776.700.752575830165346316@mail.alporthouse.com> User-Agent: alot/0.3.6 Subject: Re: [Intel-gfx] [PATCH v3 3/9] drm: Add Content Protection property Date: Tue, 05 Dec 2017 15:40:47 +0000 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 356 Lines: 9 Quoting Daniel Vetter (2017-12-05 15:34:36) > Two bits missing imo: > - Should explain that userspace should poll this property to detect a > change from ENABLED to DESIRED (and take adequate actions and e.g. stop > the stream). No uevent will be sent out because the HDCP specs require > polling anyway. What's more polling than poll()? :-p -Chris