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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 81EF0C4646B for ; Wed, 26 Jun 2019 03:49:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 52ABD214DA for ; Wed, 26 Jun 2019 03:49:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561520946; bh=jR+4A1dwMOdo0F/s8t4BNQ1CilH+GXDKBG8569YINPI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=N82Wrz+M1vr048wGYhIWt/Gj+jED87K7gLB9MwyBbg5chwTpUOZq8dO3miuIJBrFg EnJdjBptkMDKm/dE/6lU43ifKV0bPHp35NgMM+nwTyTlHMnzs4Xm/wT347O98UmwwT OkNZY3HvR0T/Pzwt3MjtVJgOjWBhwGtdUxfJcZEs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727470AbfFZDoA (ORCPT ); Tue, 25 Jun 2019 23:44:00 -0400 Received: from mail.kernel.org ([198.145.29.99]:55306 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726860AbfFZDn7 (ORCPT ); Tue, 25 Jun 2019 23:43:59 -0400 Received: from sasha-vm.mshome.net (mobile-107-77-172-98.mobile.att.net [107.77.172.98]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8231020883; Wed, 26 Jun 2019 03:43:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561520639; bh=jR+4A1dwMOdo0F/s8t4BNQ1CilH+GXDKBG8569YINPI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bPqq6y8Z9KMBkyrPHLdY/0kQpYXXSxfN4b32NlZQ/KxrwJO64nH1T6k5/XLmMNx1u fq9mZx5ngIDrVrBIh3CZyUYvrxKNB51eOWGiiwXq/Iav441hHsR2fQcj60DU8dH5no Txns8/7kun7nBWelcgdHzyZOQol1wycKBDl9eIYY= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Hsin-Yi Wang , CK Hu , Sasha Levin , dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 4.19 11/34] drm/mediatek: clear num_pipes when unbind driver Date: Tue, 25 Jun 2019 23:43:12 -0400 Message-Id: <20190626034335.23767-11-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190626034335.23767-1-sashal@kernel.org> References: <20190626034335.23767-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Hsin-Yi Wang [ 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