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=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 ECD9CC4646B for ; Wed, 26 Jun 2019 03:42:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BD8D820659 for ; Wed, 26 Jun 2019 03:42:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561520532; bh=HRhRYnyHVM87LoR0ih2Jci+FMYcGNLH438ugNRmuhsQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=A5bf724gyQVUq/kJiGcfqCBJxXTrvHhVy3/Ep6OH7dKItdWmwd15ocMaRElSC9sF2 eLeRQvUfQoP6GqrEJQbfyWS1Xd4WMmRrzfbbEIit6pzN5piHraNgNRWeFgFZAPa7IB SSCGXankR7Rpcfwj7UaPdvCPV6/h3KNbaHeWGUT0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727014AbfFZDmL (ORCPT ); Tue, 25 Jun 2019 23:42:11 -0400 Received: from mail.kernel.org ([198.145.29.99]:52676 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726960AbfFZDmA (ORCPT ); Tue, 25 Jun 2019 23:42:00 -0400 Received: from sasha-vm.mshome.net (mobile-107-77-172-74.mobile.att.net [107.77.172.74]) (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 8B29320659; Wed, 26 Jun 2019 03:41:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561520519; bh=HRhRYnyHVM87LoR0ih2Jci+FMYcGNLH438ugNRmuhsQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qnWAYgcMqqGtymkAV1pm+wwJdalxFv3HdMepvGBqXbB+iCBKJATbbwiBHir2xH+FT UDHAD8MzYcADcMmIYtAW7qz5NMnLP9CLXtHN5kDtR1zo9t7NbJrQrVqL45vOn6QbSB ie87QM2ffLCEyUP3v4ZjZ+esH+D+xh3AkKhQe/MY= 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 5.1 18/51] drm/mediatek: clear num_pipes when unbind driver Date: Tue, 25 Jun 2019 23:40:34 -0400 Message-Id: <20190626034117.23247-18-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190626034117.23247-1-sashal@kernel.org> References: <20190626034117.23247-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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 8718d123ccaa..bbfe3a464aea 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -400,6 +400,7 @@ 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