From patchwork Fri Mar 29 15:48:05 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Yannick FERTRE X-Patchwork-Id: 10877489 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8CE4B1708 for ; Fri, 29 Mar 2019 15:48:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 792BE289F4 for ; Fri, 29 Mar 2019 15:48:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6D31D289F8; Fri, 29 Mar 2019 15:48:53 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 1DD3E289F4 for ; Fri, 29 Mar 2019 15:48:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=puSMrGH9hHy7kKEQyy/pLKljGPafhMy6XlApuvlywNQ=; b=I/ZhtZelxuVr18 IV9amUZn7to78ZxtEvgdByTxTPYRNtyRWC7fJ5ecTdqv4itP1XtnnukhqKaDRprAlAJ0FX3w7N6Ry /AEUftD0WRO7adri7StrTrAn4gWS0bLGWG5MqNrVUMyt+wr8YPFehHeuVemgr1GobPeBF+NIjY3hB HhiR/O1qxXaZL/PJKdhEblYoYpX6/NUt2ohSQMSfP2XSMN02Hg1ej8HF6xxaMrPAor0rfMw0Qs4bt B/NoP6TMcBSUjNiade33XW4/rC80CqDKRyyfUYiUWrbswbYzUCDbi3MZ/WnSsbm7OVwZcx2ULswtx J0yLeOTR5+Pl8QZ6N+wg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h9tkM-0003s6-45; Fri, 29 Mar 2019 15:48:46 +0000 Received: from mx07-00178001.pphosted.com ([62.209.51.94]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h9tkI-0003ro-Sv for linux-arm-kernel@lists.infradead.org; Fri, 29 Mar 2019 15:48:44 +0000 Received: from pps.filterd (m0046668.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x2TFfrZB015967; Fri, 29 Mar 2019 16:48:37 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2rddhc5v1s-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Fri, 29 Mar 2019 16:48:37 +0100 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 9A76D31; Fri, 29 Mar 2019 15:48:36 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas22.st.com [10.75.90.92]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 778824ED4; Fri, 29 Mar 2019 15:48:36 +0000 (GMT) Received: from SAFEX1HUBCAS23.st.com (10.75.90.47) by Safex1hubcas22.st.com (10.75.90.92) with Microsoft SMTP Server (TLS) id 14.3.361.1; Fri, 29 Mar 2019 16:48:36 +0100 Received: from localhost (10.201.23.97) by webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.435.0; Fri, 29 Mar 2019 16:48:35 +0100 From: =?utf-8?q?Yannick_Fertr=C3=A9?= To: Yannick Fertre , Philippe Cornu , Vincent Abriou , David Airlie , Daniel Vetter , Maxime Coquelin , Alexandre Torgue , , , , Subject: [PATCH] drm/stm: ltdc: disable hw interrupts before its handler init Date: Fri, 29 Mar 2019 16:48:05 +0100 Message-ID: <1553874485-31259-1-git-send-email-yannick.fertre@st.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.201.23.97] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-03-29_08:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190329_084843_226383_A697B7E8 X-CRM114-Status: UNSURE ( 8.79 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Interrupt register must be disabled before call of devm_request_threaded_irq function to avoid dummy interruption. Signed-off-by: Yannick Fertré Acked-by: Philippe Cornu --- drivers/gpu/drm/stm/ltdc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c index b1741a9..ef5b4d6 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -1118,6 +1118,10 @@ int ltdc_load(struct drm_device *ddev) goto err; } + /* Disable interrupts */ + reg_clear(ldev->regs, LTDC_IER, + IER_LIE | IER_RRIE | IER_FUIE | IER_TERRIE); + for (i = 0; i < MAX_IRQ; i++) { irq = platform_get_irq(pdev, i); if (irq < 0) @@ -1138,10 +1142,6 @@ int ltdc_load(struct drm_device *ddev) reset_control_deassert(rstc); } - /* Disable interrupts */ - reg_clear(ldev->regs, LTDC_IER, - IER_LIE | IER_RRIE | IER_FUIE | IER_TERRIE); - ret = ltdc_get_caps(ddev); if (ret) { DRM_ERROR("hardware identifier (0x%08x) not supported!\n",