From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2C2352010EE for ; Wed, 15 Oct 2025 10:03:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.251.105.195 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760522592; cv=none; b=UQlUa2yf9dBxuI66UfXp9QJobJQPiFUXkFZf3Lx+i3lFQzF8V8G/fe4Bmi1x3B5mUrqKJsfUQnok70q9W8M4S3qFLIXxau/zI6BKUlVFksN7LEJvCRWlL8fEYqQcGqwzYXqxo5iD+IjWPrderKQ4ZBERiwbsRLaWYJAeEUQFLt8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760522592; c=relaxed/simple; bh=vIUSMXrHYo6IVAXXMlf2z2QqzqoJqcv9TqtH8rYDitE=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=YZN253aIxX8JwYMV/cB0bK3cXwcmGUdBMrUyBcElez9lGLRfL4uuuDG1Si8P55RsvLP6uZ1UnfEJtdS1t9DcGT4ysY5SMAZ9+EScN9YdghquW64yT01ozbJPueVET4csVWrOt292Cq9rc7CGRK34IKRBPAnofzNla1J/togroX0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=P8jstF9E; arc=none smtp.client-ip=148.251.105.195 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="P8jstF9E" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1760522588; bh=vIUSMXrHYo6IVAXXMlf2z2QqzqoJqcv9TqtH8rYDitE=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=P8jstF9EFj1pRwbRbKvsomEZszhzzmqa/emjO22fMo3rkEfP5JsJ5N1N4ZpP/NswI D17peeUodI2Qo1oJinpW1/CbABku69oUBKLoSXrnZBuiwxQ3OOvmM43QD8/UbUNVE9 r5/C1Fbytwz4q2HA5fTewQdJW0bvRyHP6kjpElWDxJiDCaUQdf7291XkG1n8rFAomC bkX/PltyOWoolKBd9X2MSes74NZWXhZHwoiXVCb3HCZElbLxtyY2Xx968D9F9Z0NRP 99RxlnNhhstChFTilT1r8aC/xw0JRWM2s8Lh81FJgNnZJftCM3AXfhO/rZt2taTSQF bftZTKi8vPQCw== Received: from [192.168.1.90] (unknown [82.79.138.145]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: cristicc) by bali.collaboradmins.com (Postfix) with ESMTPSA id 93E8E17E00A3; Wed, 15 Oct 2025 12:03:07 +0200 (CEST) Message-ID: <7291eff3-b259-4209-b150-cb220abc01ec@collabora.com> Date: Wed, 15 Oct 2025 13:03:07 +0300 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] drm/bridge: dw-hdmi-qp: Fix spurious IRQ on resume To: Sebastian Reichel , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Sandy Huang , =?UTF-8?Q?Heiko_St=C3=BCbner?= , Andy Yan Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, kernel@collabora.com References: <20251014-rockchip-hdmi-suspend-fix-v1-1-983fcbf44839@collabora.com> Content-Language: en-US From: Cristian Ciocaltea In-Reply-To: <20251014-rockchip-hdmi-suspend-fix-v1-1-983fcbf44839@collabora.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 10/14/25 7:00 PM, Sebastian Reichel wrote: > After resume from suspend to RAM, the following splash is generated if > the HDMI driver is probed (independent of a connected cable): > > [ 1194.484052] irq 80: nobody cared (try booting with the "irqpoll" option) > [ 1194.484074] CPU: 0 UID: 0 PID: 627 Comm: rtcwake Not tainted 6.17.0-rc7-g96f1a11414b3 #1 PREEMPT > [ 1194.484082] Hardware name: Rockchip RK3576 EVB V10 Board (DT) > [ 1194.484085] Call trace: > [ 1194.484087] ... (stripped) > [ 1194.484283] handlers: > [ 1194.484285] [<00000000bc363dcb>] dw_hdmi_qp_main_hardirq [dw_hdmi_qp] > [ 1194.484302] Disabling IRQ #80 > > Apparently the HDMI IP is losing part of its state while the system > is suspended and generates spurious interrupts during resume. The > bug has not yet been noticed, as system suspend does not yet work > properly on upstream kernel with either the Rockchip RK3588 or RK3576 > platform. > > Fixes: 128a9bf8ace2 ("drm/rockchip: Add basic RK3588 HDMI output support") > Signed-off-by: Sebastian Reichel LGTM, hence Reviewed-by: Cristian Ciocaltea