From patchwork Fri Nov 25 09:09:50 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jyri Sarha X-Patchwork-Id: 9446983 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 515DA6071C for ; Fri, 25 Nov 2016 09:11:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 340CA27FBB for ; Fri, 25 Nov 2016 09:11:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 28F2F2808F; Fri, 25 Nov 2016 09:11:16 +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=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 8C2B227FBB for ; Fri, 25 Nov 2016 09:11:12 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B9E2F6EB85; Fri, 25 Nov 2016 09:11:11 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from lelnx193.ext.ti.com (lelnx193.ext.ti.com [198.47.27.77]) by gabe.freedesktop.org (Postfix) with ESMTPS id B9BDE6EB88 for ; Fri, 25 Nov 2016 09:10:21 +0000 (UTC) Received: from dflxv15.itg.ti.com ([128.247.5.124]) by lelnx193.ext.ti.com (8.15.1/8.15.1) with ESMTP id uAP9AIV5017747; Fri, 25 Nov 2016 03:10:18 -0600 Received: from DLEE70.ent.ti.com (dlemailx.itg.ti.com [157.170.170.113]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id uAP9AISu000688; Fri, 25 Nov 2016 03:10:18 -0600 Received: from dflp33.itg.ti.com (10.64.6.16) by DLEE70.ent.ti.com (157.170.170.113) with Microsoft SMTP Server id 14.3.294.0; Fri, 25 Nov 2016 03:10:17 -0600 Received: from jadmar.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id uAP99w2s003556; Fri, 25 Nov 2016 03:10:15 -0600 From: Jyri Sarha To: Subject: [PATCH v4 07/10] drm/tilcdc: Add timeout wait for palette loading to complete Date: Fri, 25 Nov 2016 11:09:50 +0200 Message-ID: <8f10df31ee0a32687803c2c665822bb8f0d9fc4d.1480064884.git.jsarha@ti.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: References: MIME-Version: 1.0 Cc: khilman@baylibre.com, Jyri Sarha , peter.ujfalusi@ti.com, bgolaszewski@baylibre.com, tomi.valkeinen@ti.com, laurent.pinchart@ideasonboard.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Add timeout wait for palette loadind to complete. We do not want to hang forever if palette loaded interrupt does not arrive for some reason. Signed-off-by: Jyri Sarha --- drivers/gpu/drm/tilcdc/tilcdc_crtc.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c index b3edc6d..f736a89 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c @@ -125,6 +125,7 @@ static void tilcdc_crtc_load_palette(struct drm_crtc *crtc) struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc); struct drm_device *dev = crtc->dev; struct tilcdc_drm_private *priv = dev->dev_private; + int ret; dma_fb_base = tilcdc_read(dev, LCDC_DMA_FB_BASE_ADDR_0_REG); dma_fb_ceiling = tilcdc_read(dev, LCDC_DMA_FB_CEILING_ADDR_0_REG); @@ -152,7 +153,10 @@ static void tilcdc_crtc_load_palette(struct drm_crtc *crtc) tilcdc_clear_irqstatus(dev, 0xffffffff); tilcdc_set(dev, LCDC_RASTER_CTRL_REG, LCDC_RASTER_ENABLE); - wait_for_completion(&tilcdc_crtc->palette_loaded); + ret = wait_for_completion_timeout(&tilcdc_crtc->palette_loaded, + msecs_to_jiffies(50)); + if (ret == 0) + dev_err(dev->dev, "%s: Palette loading timeout", __func__); /* Disable LCDC DMA and DMA Palette Loaded Interrupt. */ tilcdc_clear(dev, LCDC_RASTER_CTRL_REG, LCDC_RASTER_ENABLE);