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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E49A8EB64DC for ; Mon, 17 Jul 2023 06:53:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229934AbjGQGx0 (ORCPT ); Mon, 17 Jul 2023 02:53:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46474 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229789AbjGQGxX (ORCPT ); Mon, 17 Jul 2023 02:53:23 -0400 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C758A1B8 for ; Sun, 16 Jul 2023 23:53:22 -0700 (PDT) Received: from workpc.. (109-252-154-2.dynamic.spd-mgts.ru [109.252.154.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: dmitry.osipenko) by madras.collabora.co.uk (Postfix) with ESMTPSA id A750B6606FC8; Mon, 17 Jul 2023 07:53:20 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1689576801; bh=Qg+dZVqpBhB0tdjxJjayctf5oTh5j/Q35LZHB4aWX3g=; h=From:To:Cc:Subject:Date:From; b=iZCsocr3wv7hB+yJWmF5hTomJIme07DhhvIYvcWqMPVFNTRfCvx+YawXBboyyFpFl kV0xjtcCRFxBVRJ8XxGlq8Hiku6EAqGbr9Lke5lvFDLJu6HqIQkZvUfoGS5Fn3Mtt4 XK3kjvcWufScXyyxCNdoN/CVhwj8S177fpdX8BcCOEbUObGnXzz2jGOM3s7jPc+Sis CuuTwV4hUItmkcoFy+R5eVmp0KSao32sNs4nObbZNh8ZYO87AxOz/vB+lkl3aQ44bs o48Lk9r83tPm9gwer4C91W/rvFdz6KDngH8OFlWdrKHBZ2t6hPMqRg+9l76o9HfQI6 +RI+c4gAN6NkQ== From: Dmitry Osipenko To: Rob Herring , Steven Price , Boris Brezillon Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, kernel@collabora.com Subject: [PATCH v1] drm/panfrost: Sync IRQ by job's timeout handler Date: Mon, 17 Jul 2023 09:52:54 +0300 Message-ID: <20230717065254.1061033-1-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.41.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Panfrost IRQ handler may stuck for a long time, for example this happens when there is a bad HDMI connection and HDMI handler takes a long time to finish processing, holding Panfrost. Make Panfrost's job timeout handler to sync IRQ before checking fence signal status in order to prevent spurious job timeouts due to a slow IRQ processing. Signed-off-by: Dmitry Osipenko --- drivers/gpu/drm/panfrost/panfrost_job.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c b/drivers/gpu/drm/panfrost/panfrost_job.c index dbc597ab46fb..a356163da22d 100644 --- a/drivers/gpu/drm/panfrost/panfrost_job.c +++ b/drivers/gpu/drm/panfrost/panfrost_job.c @@ -713,6 +713,8 @@ static enum drm_gpu_sched_stat panfrost_job_timedout(struct drm_sched_job struct panfrost_device *pfdev = job->pfdev; int js = panfrost_job_get_slot(job); + synchronize_irq(pfdev->js->irq); + /* * If the GPU managed to complete this jobs fence, the timeout is * spurious. Bail out. -- 2.41.0