From patchwork Mon Jul 6 12:15:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 11645563 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 31EE01398 for ; Mon, 6 Jul 2020 12:15:32 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DFBA52070C for ; Mon, 6 Jul 2020 12:15:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DFBA52070C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chris-wilson.co.uk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5F2AE6E3DF; Mon, 6 Jul 2020 12:15:31 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id 884A56E37C; Mon, 6 Jul 2020 12:15:29 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from haswell.alporthouse.com (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP id 21728282-1500050 for multiple; Mon, 06 Jul 2020 13:15:21 +0100 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Mon, 6 Jul 2020 13:15:18 +0100 Message-Id: <20200706121520.967972-1-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH i-g-t 1/3] lib/i915: Report unknown device as the future X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: igt-dev@lists.freedesktop.org, Chris Wilson Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Since we likely know all the old devices, an unknown device is most likely a future device, so use -1u instead of 0 for its generation. Signed-off-by: Chris Wilson --- lib/intel_device_info.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/intel_device_info.c b/lib/intel_device_info.c index 21f7a9570..dfa43f490 100644 --- a/lib/intel_device_info.c +++ b/lib/intel_device_info.c @@ -447,11 +447,11 @@ out: * Computes the Intel GFX generation for the given device id. * * Returns: - * The GFX generation on successful lookup, 0 on failure. + * The GFX generation on successful lookup, -1u on failure. */ unsigned intel_gen(uint16_t devid) { - return ffs(intel_get_device_info(devid)->gen); + return ffs(intel_get_device_info(devid)->gen) ?: -1u; } /**