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 01F5CC606C1 for ; Mon, 8 Jul 2019 15:37:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C432F20651 for ; Mon, 8 Jul 2019 15:37:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562600267; bh=ONtoK3BXZ/toMaRLrlTctSDqZ492BitQ+Z3AMHfxM84=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=G0Mt29JZm0Uu5Sgw8ymgHghOCTli+ycACSCDdD9RE1GE2WrStv4gi4yToIkSHfc9Q AALcj1RMnD7uxcDe39RL2kmNVzX+DzBMifrVF9nkqFgfdwVRT76Qvwkvl8wCTNv5yr ida+sRbc5c5UerxPBmZjyNvOgYm5HLsKcYyB2k2U= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389768AbfGHPb3 (ORCPT ); Mon, 8 Jul 2019 11:31:29 -0400 Received: from mail.kernel.org ([198.145.29.99]:60930 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732229AbfGHPb2 (ORCPT ); Mon, 8 Jul 2019 11:31:28 -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 CD24620665; Mon, 8 Jul 2019 15:31:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562599887; bh=ONtoK3BXZ/toMaRLrlTctSDqZ492BitQ+Z3AMHfxM84=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=F7BTSWC8ktSNbLI2FlQxdg5p2GbouLYKyXJHpSIBCBR4+yxkkOYzZXznzwhOrp2m8 1pFflH2DEJ7xXaQeCZq+1tzjKetvez4Cb5H3k7HEaMxAJRtHmxoiWlS15O86yngW37 v3PRnXnivnWJvPUwGvWr2R/aDgGGxBBSJQZ7K+io= 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 5.1 22/96] drm/mediatek: clear num_pipes when unbind driver Date: Mon, 8 Jul 2019 17:12:54 +0200 Message-Id: <20190708150527.653822146@linuxfoundation.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190708150526.234572443@linuxfoundation.org> References: <20190708150526.234572443@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 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