From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751287AbdBTHep (ORCPT ); Mon, 20 Feb 2017 02:34:45 -0500 Received: from regular1.263xmail.com ([211.150.99.141]:37676 "EHLO regular1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750927AbdBTHeo (ORCPT ); Mon, 20 Feb 2017 02:34:44 -0500 X-263anti-spam: KSV:0;BIG:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ADDR-CHECKED4: 1 X-ABS-CHECKED: 1 X-SKE-CHECKED: 1 X-RL-SENDER: mark.yao@rock-chips.com X-FST-TO: kernel-janitors@vger.kernel.org X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: mark.yao@rock-chips.com X-UNIQUE-TAG: X-ATTACHMENT-NUM: 0 X-DNS-TYPE: 0 Subject: Re: [PATCH v2] drm/rockchip: cdn-dp: Fix error handling To: Christophe JAILLET , airlied@linux.ie, heiko@sntech.de References: <20170220070815.23096-1-christophe.jaillet@wanadoo.fr> Cc: dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org From: Mark yao Message-ID: <58AA9C07.5070303@rock-chips.com> Date: Mon, 20 Feb 2017 15:34:31 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 In-Reply-To: <20170220070815.23096-1-christophe.jaillet@wanadoo.fr> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2017年02月20日 15:08, Christophe JAILLET wrote: > It is likely that both 'clk_disable_unprepare()' should be called if > 'pm_runtime_get_sync()' fails. > > Add a new label for that, because 'err_set_rate' is not meaningful in this > case. > > Add a missing call to 'pm_runtime_put()'. > > Fixes: 1a0f7ed3abe2 ("drm/rockchip: cdn-dp: add cdn DP support for rk3399") > > Signed-off-by: Christophe JAILLET looks good for me Reviewed-by: Mark Yao > --- > V2: rename label > add missing call to 'pm_runtime_put_sync()' in error path > --- > drivers/gpu/drm/rockchip/cdn-dp-core.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c > index 9ab67a670885..0fe1ec8b8fb1 100644 > --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c > +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c > @@ -111,7 +111,7 @@ static int cdn_dp_clk_enable(struct cdn_dp_device *dp) > ret = pm_runtime_get_sync(dp->dev); > if (ret < 0) { > DRM_DEV_ERROR(dp->dev, "cannot get pm runtime %d\n", ret); > - goto err_pclk; > + goto err_pm_runtime_get; > } > > reset_control_assert(dp->core_rst); > @@ -133,6 +133,8 @@ static int cdn_dp_clk_enable(struct cdn_dp_device *dp) > return 0; > > err_set_rate: > + pm_runtime_put(dp->dev); > +err_pm_runtime_get: > clk_disable_unprepare(dp->core_clk); > err_core_clk: > clk_disable_unprepare(dp->pclk); -- Ｍark Yao