From patchwork Wed Mar 13 16:43:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Johan Hovold X-Patchwork-Id: 13591584 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id DC67DC54E66 for ; Wed, 13 Mar 2024 16:44:19 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DFD3F10EAA4; Wed, 13 Mar 2024 16:44:14 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="tiTMbvmK"; dkim-atps=neutral Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by gabe.freedesktop.org (Postfix) with ESMTPS id 044E010E927; Wed, 13 Mar 2024 16:44:13 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 5EA6E614A1; Wed, 13 Mar 2024 16:44:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F0640C433F1; Wed, 13 Mar 2024 16:44:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710348252; bh=hu6DpvE5WrtXLVtktC2RDOr1HzwCQFEFXKkD6CCXoEY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tiTMbvmKsyx73w93QN46IBb2DHWPyCDhJne0/OXUI93WUuu8GYWMh4rALJ94WrhDP 2WgG2A221GyBBoNi2aWVhvfTtJLxvqVAIN6wdoGd4u+FccgB772Kh8gVWQjYo/HSN8 obGqFzUrEBNJVdvsPdJUkHpK9feCq7n9kYwo7VUC8fdL96HvKpVbbCA++qr782BkUl RRAo71ipEk7P3TxmY5bn7KcWAWhcxtrqlZo6k6IsV7/kwZldlzlNd8Ec79ScfBZDOI cSHmgkHo+ClUz4L9C7HDxiG+2+P+wUB996/Sz/xLhANkWP2ynLBlL2LWIw4d5fWdd0 ZTt79M+XF0wJg== Received: from johan by xi.lan with local (Exim 4.97.1) (envelope-from ) id 1rkRiG-0000000062D-0QH9; Wed, 13 Mar 2024 17:44:20 +0100 From: Johan Hovold To: Rob Clark , Abhinav Kumar , Dmitry Baryshkov Cc: Sean Paul , Marijn Suijten , David Airlie , Daniel Vetter , Kuogee Hsieh , Bjorn Andersson , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, Johan Hovold , stable@vger.kernel.org Subject: [PATCH 2/2] drm/msm/dp: fix runtime PM leak on connect failure Date: Wed, 13 Mar 2024 17:43:06 +0100 Message-ID: <20240313164306.23133-3-johan+linaro@kernel.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240313164306.23133-1-johan+linaro@kernel.org> References: <20240313164306.23133-1-johan+linaro@kernel.org> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Make sure to balance the runtime PM usage counter (and suspend) before returning on connect failures (e.g. DPCD read failures after a spurious connect event or if link training fails). Fixes: 5814b8bf086a ("drm/msm/dp: incorporate pm_runtime framework into DP driver") Cc: stable@vger.kernel.org # 6.8 Cc: Kuogee Hsieh Signed-off-by: Johan Hovold Reviewed-by: Abhinav Kumar --- drivers/gpu/drm/msm/dp/dp_display.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 8e8cf531da45..78464c395c3d 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -598,6 +598,7 @@ static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data) ret = dp_display_usbpd_configure_cb(&pdev->dev); if (ret) { /* link train failed */ dp->hpd_state = ST_DISCONNECTED; + pm_runtime_put_sync(&pdev->dev); } else { dp->hpd_state = ST_MAINLINK_READY; }