From patchwork Tue Apr 26 08:21:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 567969 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2854AC433FE for ; Tue, 26 Apr 2022 08:37:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242241AbiDZIkz (ORCPT ); Tue, 26 Apr 2022 04:40:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59644 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345821AbiDZIje (ORCPT ); Tue, 26 Apr 2022 04:39:34 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3EF8AA146A; Tue, 26 Apr 2022 01:31:47 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id CE77C617D2; Tue, 26 Apr 2022 08:31:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D9F73C385A4; Tue, 26 Apr 2022 08:31:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1650961906; bh=zzLxfROdWq0Cc24SvURJjLlL4V9CEWV5ldpGU7FrGoc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bQ5fPhZ5OdtwlhhW5iYXmXmWovwhX2B0mYoNmABC4VaZe7yGYS8CigAJuurI8kGjd /Mx17SQaVLDMmJBlun1cV69lH/Md0vSTlvF3B03ZeAEbxOI5kK1kol168r7jQF0Eza dZlIHShC1RlELlPZd7y3kHF2oFnd+y3sbVUgZZQk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Miaoqian Lin , Maxime Ripard , Sasha Levin Subject: [PATCH 5.4 43/62] drm/vc4: Use pm_runtime_resume_and_get to fix pm_runtime_get_sync() usage Date: Tue, 26 Apr 2022 10:21:23 +0200 Message-Id: <20220426081738.457734060@linuxfoundation.org> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20220426081737.209637816@linuxfoundation.org> References: <20220426081737.209637816@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Miaoqian Lin [ Upstream commit 3d0b93d92a2790337aa9d18cb332d02356a24126 ] If the device is already in a runtime PM enabled state pm_runtime_get_sync() will return 1. Also, we need to call pm_runtime_put_noidle() when pm_runtime_get_sync() fails, so use pm_runtime_resume_and_get() instead. this function will handle this. Fixes: 4078f5757144 ("drm/vc4: Add DSI driver") Signed-off-by: Miaoqian Lin Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20220420135008.2757-1-linmq006@gmail.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/vc4/vc4_dsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c index c78fa8144776..0983949cc8c9 100644 --- a/drivers/gpu/drm/vc4/vc4_dsi.c +++ b/drivers/gpu/drm/vc4/vc4_dsi.c @@ -831,7 +831,7 @@ static void vc4_dsi_encoder_enable(struct drm_encoder *encoder) unsigned long phy_clock; int ret; - ret = pm_runtime_get_sync(dev); + ret = pm_runtime_resume_and_get(dev); if (ret) { DRM_ERROR("Failed to runtime PM enable on DSI%d\n", dsi->port); return;