From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D0F87C606C1 for ; Mon, 8 Jul 2019 15:26:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A0BB4204EC for ; Mon, 8 Jul 2019 15:26:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562599612; bh=airXRAxZKDnos46/zoucRow1iqpdjYT320OPeYpozhM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=h6GjAtvkUO/jn8IEewZarYvaKpplh+pgD4qcJ67H3fRP5BzAIL68Y4F28cb5rILMC lP2CvSMsRNGOCedggI0EPF6sy7DTlTkIIGl2shSyDkm1AeHhbMSL3BcaXsDOZaHRx9 Pl3pIB78D+JRar+ahrbCZbtzAFNGyS9FR7rXR4MU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388923AbfGHP0v (ORCPT ); Mon, 8 Jul 2019 11:26:51 -0400 Received: from mail.kernel.org ([198.145.29.99]:54622 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388881AbfGHP0q (ORCPT ); Mon, 8 Jul 2019 11:26:46 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 36F44204EC; Mon, 8 Jul 2019 15:26:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562599605; bh=airXRAxZKDnos46/zoucRow1iqpdjYT320OPeYpozhM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aGbzQ5muSDu8YuntNrESEa/9u2MrUHXnHYSp2+wXXu+/peswEGJiM0wbYMnY5DdbC qGV3iUd9Y5SyZancnSHrLjLgP/UtbHjLjn7L6YdqwskDLbjcC3Sa7hlNf4AdoS2iQW 3MA9KcXX7wpTqgYhrksP6jzCXV3Ro9HOXhK5dZq4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Hsin-Yi Wang , CK Hu , Sasha Levin Subject: [PATCH 4.19 16/90] drm/mediatek: clear num_pipes when unbind driver Date: Mon, 8 Jul 2019 17:12:43 +0200 Message-Id: <20190708150523.443835624@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190708150521.829733162@linuxfoundation.org> References: <20190708150521.829733162@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [ Upstream commit a4cd1d2b016d5d043ab2c4b9c4ec50a5805f5396 ] num_pipes is used for mutex created in mtk_drm_crtc_create(). If we don't clear num_pipes count, when rebinding driver, the count will be accumulated. From mtk_disp_mutex_get(), there can only be at most 10 mutex id. Clear this number so it starts from 0 in every rebind. Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.") Signed-off-by: Hsin-Yi Wang Signed-off-by: CK Hu Signed-off-by: Sasha Levin --- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index 3df8a9dbccfe..fd83046d8376 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -393,6 +393,7 @@ static void mtk_drm_unbind(struct device *dev) drm_dev_unregister(private->drm); mtk_drm_kms_deinit(private->drm); drm_dev_put(private->drm); + private->num_pipes = 0; private->drm = NULL; } -- 2.20.1