From patchwork Fri Feb 24 09:29:05 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 732002 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3vV5R518Vjz9s7y for ; Fri, 24 Feb 2017 20:29:37 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751349AbdBXJ3g (ORCPT ); Fri, 24 Feb 2017 04:29:36 -0500 Received: from mx1.redhat.com ([209.132.183.28]:51666 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751311AbdBXJ3c (ORCPT ); Fri, 24 Feb 2017 04:29:32 -0500 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2E45F80467; Fri, 24 Feb 2017 09:29:33 +0000 (UTC) Received: from shalem.localdomain.com (ovpn-117-66.ams2.redhat.com [10.36.117.66]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id v1O9TEga029110; Fri, 24 Feb 2017 04:29:30 -0500 From: Hans de Goede To: Daniel Vetter , Jani Nikula , =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= , Jarkko Nikula , Wolfram Sang , Andy Shevchenko , Thomas Gleixner , "H . Peter Anvin" Cc: Hans de Goede , intel-gfx , Mika Westerberg , Takashi Iwai , "russianneuromancer @ ya . ru" , linux-i2c@vger.kernel.org Subject: [PATCH v4 05/12] i2c: designware-baytrail: Only check iosf_mbi_available() for shared hosts Date: Fri, 24 Feb 2017 10:29:05 +0100 Message-Id: <20170224092912.10685-6-hdegoede@redhat.com> In-Reply-To: <20170224092912.10685-1-hdegoede@redhat.com> References: <20170224092912.10685-1-hdegoede@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.26 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Fri, 24 Feb 2017 09:29:33 +0000 (UTC) Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org If (!shared_host) simply return 0, this avoids delaying the probe if iosf_mbi_available() returns false when an i2c bus is not using the punit semaphore. Also move the if (!iosf_mbi_available()) check to above the dev_info, so that we do not repeat the dev_info on every probe until iosf_mbi_available() returns true. Signed-off-by: Hans de Goede Reviewed-by: Andy Shevchenko Acked-by: Jarkko Nikula Tested-by: Takashi Iwai Acked-by: Wolfram Sang --- Changes in v2: -New patch in v2 of this set Changes in v3: -Use if (!shared_host) return 0, to simplify the non-shared_host path and to avoid nested ifs --- drivers/i2c/busses/i2c-designware-baytrail.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/i2c/busses/i2c-designware-baytrail.c b/drivers/i2c/busses/i2c-designware-baytrail.c index a3f581c..cf02222 100644 --- a/drivers/i2c/busses/i2c-designware-baytrail.c +++ b/drivers/i2c/busses/i2c-designware-baytrail.c @@ -138,15 +138,16 @@ int i2c_dw_eval_lock_support(struct dw_i2c_dev *dev) if (ACPI_FAILURE(status)) return 0; - if (shared_host) { - dev_info(dev->dev, "I2C bus managed by PUNIT\n"); - dev->acquire_lock = baytrail_i2c_acquire; - dev->release_lock = baytrail_i2c_release; - dev->pm_runtime_disabled = true; - } + if (!shared_host) + return 0; if (!iosf_mbi_available()) return -EPROBE_DEFER; + dev_info(dev->dev, "I2C bus managed by PUNIT\n"); + dev->acquire_lock = baytrail_i2c_acquire; + dev->release_lock = baytrail_i2c_release; + dev->pm_runtime_disabled = true; + return 0; }