From patchwork Sun Jul 28 11:41:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Wahren X-Patchwork-Id: 815960 Received: from mout.gmx.net (mout.gmx.net [212.227.15.19]) (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 CA26B37708; Sun, 28 Jul 2024 11:44:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=212.227.15.19 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722167082; cv=none; b=iuPIidzYDn8UGjajlFk2oFDeX4EnJqOTuTgD8UM+CuE0U2JLfylbPVrR+QiOl9Cc4GlYHlx7xFUz9fPgsLPmDCOuxgBmfzn7IscijkXl85y9beVcqa4lMlEn81389zkM7iZnNszkwmEt12WCr+DUJqrSFTBMZZTjIV1jq64hzPc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722167082; c=relaxed/simple; bh=wY20nfRBuENskS9j1MKl9esl/9d+REWM+u8BeV3PCjU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; 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b=Qksm5P3p5CRNNdes+g/NL3jPU3p0HnphU3o6RslsQNc6xdp27JbMo4YFDMPvZEPp 1npoVNRq8Ut84Q/9FW3e9K2LYWLKf9NuClS9noeFFCDzIx7gP67rQD1y3m52hMc6m qU9CoBFhmrcJeevpkGpCl5+KoovkMajx+0XYLEoL44FFmyk+kyJWN6JAHZU9j+Us0 xGJYNwpUFNoQBBwn3zqVMQhcr1RtLU+PpMIkW7GLuPJJx0gsfB0K+brveI5BCYVGO xbRESKLXnLysz60odoVdsOgsQoSOi+3SqYSmxnDKRVC0cycwthJI1lh32sS/rTl30 MypypdLKkzA9dQgv1g== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from stefanw-SCHENKER ([37.4.248.43]) by mail.gmx.net (mrgmx004 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MTzay-1sgJoM2ID4-00L8m9; Sun, 28 Jul 2024 13:44:12 +0200 From: Stefan Wahren To: Greg Kroah-Hartman , Florian Fainelli , Ray Jui , Scott Branden , Maxime Ripard , Jassi Brar , Ulf Hansson , =?utf-8?q?Ma=C3=ADra_Canal?= , Jiri Slaby , Minas Harutyunyan Cc: Dave Stevenson , Maarten Lankhorst , Thomas Zimmermann , David Airlie , Daniel Vetter , Lukas Wunner , Artur Petrosyan , Peter Robinson , dri-devel@lists.freedesktop.org, bcm-kernel-feedback-list@broadcom.com, linux-pm@vger.kernel.org, linux-serial@vger.kernel.org, linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel-list@raspberrypi.com, Stefan Wahren Subject: [PATCH V2 02/16] mailbox: bcm2835: Fix timeout during suspend mode Date: Sun, 28 Jul 2024 13:41:46 +0200 Message-Id: <20240728114200.75559-3-wahrenst@gmx.net> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240728114200.75559-1-wahrenst@gmx.net> References: <20240728114200.75559-1-wahrenst@gmx.net> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Provags-ID: V03:K1:8gHlvy2cq7q0FmBdgqfBmCudv2v+AkQkTrbr6+v+4cawgLMRiP7 I6WYfRp6lfU706qmZLWTww4siOukAG7n+jA1FU86+qu98d+U9UMGhdlkyDy7QS5icxFNBoQ NOzJmBmCDlN8gyXryRU/xNOovaw4p4zCkJorOxMb2ZmVx52i6MHgBiBiZH9NahfdXKsFV0r 17NLGKp4+sax2g19ulL0g== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:GvHpumZq+Q4=;f1hgc09s2ZL1zFiR+ZdW9uLpm4l Dl83J93DYLWs2cENUpRtKq+92lalmUjF3cfldUv8D4vwexvokVVZ3v6vub5l2CHu/uBNi4VFb 96xBHlgEsRFrqqd/JeuZ4hzsMPoVDxAou+zwdUcAaDEVML83SSj6WxSAjHamY1O4rYbC9Z1zW GpxHei+/kzjv0e1FZduakzXVqURdsOmNfpi1iUyoGaxkpYnQNjI1XTveoVXdMv2uLpvu0a2sE 3El1GFJxlm4u+xubtnZjY/AMTFqZwMgbrxX5K3KD1H+FiQ15ikaeHqbZctW9tFkPoJFBarEBu snVeFD4taEcrRtuBBjVqWNz9y0RTdO4KaXutvq8CkNCi51MwERHOOV2GNbm8Sa7Q37F1veRuu 0Uo88LrN1eQGeC/5KYpDHEhJVdPCsVNzUpr+hBh++B84KxXpogaSvoGl0MSv3thaBu/HrQd1b Vii8/RcP0dviPTwenY9KkZbIrP6BX/LTh1fktdIR1zwWb6AMZMPc83cJLRyo0vtFdBhBomTBj ffpmoGVvjwUQOrtX7CV75+i5wMIQ28WR5w+8vrJMIo74GxUKUZbjU+JiwE1KM/BgrUPSNzSRG 1ssfhtEEh6NFmL6xXeosAaRnjmvZDpl96wCWIGFbyfQ6d7bWS/cXvr7irUcL8Bjbn9u5pwJri RwfZjiZyu4SlzmsNfq6IcPb8E7AZaoLstB2zer8eQTeXyrS7+v+LaIdHT5LFFzhTa2VZ6ygXa KYC1VR/M+gHjWUHy2roAegzM2+2sZkrRahiQCY1BE4oB4r5B3/D29UlpWOwvBvydCwzxG98wr EoDivwl3aXoYFWu89mq048AA== During noirq suspend phase the Raspberry Pi power driver suffer of firmware property timeouts. The reason is that the IRQ of the underlying BCM2835 mailbox is disabled and rpi_firmware_property_list() will always run into a timeout [1]. Since the VideoCore side isn't consider as a wakeup source, set the IRQF_NO_SUSPEND flag for the mailbox IRQ in order to keep it enabled during suspend-resume cycle. [1] PM: late suspend of devices complete after 1.754 msecs WARNING: CPU: 0 PID: 438 at drivers/firmware/raspberrypi.c:128 rpi_firmware_property_list+0x204/0x22c Firmware transaction 0x00028001 timeout Modules linked in: CPU: 0 PID: 438 Comm: bash Tainted: G C 6.9.3-dirty #17 Hardware name: BCM2835 Call trace: unwind_backtrace from show_stack+0x18/0x1c show_stack from dump_stack_lvl+0x34/0x44 dump_stack_lvl from __warn+0x88/0xec __warn from warn_slowpath_fmt+0x7c/0xb0 warn_slowpath_fmt from rpi_firmware_property_list+0x204/0x22c rpi_firmware_property_list from rpi_firmware_property+0x68/0x8c rpi_firmware_property from rpi_firmware_set_power+0x54/0xc0 rpi_firmware_set_power from _genpd_power_off+0xe4/0x148 _genpd_power_off from genpd_sync_power_off+0x7c/0x11c genpd_sync_power_off from genpd_finish_suspend+0xcc/0xe0 genpd_finish_suspend from dpm_run_callback+0x78/0xd0 dpm_run_callback from device_suspend_noirq+0xc0/0x238 device_suspend_noirq from dpm_suspend_noirq+0xb0/0x168 dpm_suspend_noirq from suspend_devices_and_enter+0x1b8/0x5ac suspend_devices_and_enter from pm_suspend+0x254/0x2e4 pm_suspend from state_store+0xa8/0xd4 state_store from kernfs_fop_write_iter+0x154/0x1a0 kernfs_fop_write_iter from vfs_write+0x12c/0x184 vfs_write from ksys_write+0x78/0xc0 ksys_write from ret_fast_syscall+0x0/0x54 Exception stack(0xcc93dfa8 to 0xcc93dff0) [...] PM: noirq suspend of devices complete after 3095.584 msecs Link: https://github.com/raspberrypi/firmware/issues/1894 Fixes: 0bae6af6d704 ("mailbox: Enable BCM2835 mailbox support") Signed-off-by: Stefan Wahren Reviewed-by: Florian Fainelli --- drivers/mailbox/bcm2835-mailbox.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) -- 2.34.1 diff --git a/drivers/mailbox/bcm2835-mailbox.c b/drivers/mailbox/bcm2835-mailbox.c index fbfd0202047c..ea12fb8d2401 100644 --- a/drivers/mailbox/bcm2835-mailbox.c +++ b/drivers/mailbox/bcm2835-mailbox.c @@ -145,7 +145,8 @@ static int bcm2835_mbox_probe(struct platform_device *pdev) spin_lock_init(&mbox->lock); ret = devm_request_irq(dev, irq_of_parse_and_map(dev->of_node, 0), - bcm2835_mbox_irq, 0, dev_name(dev), mbox); + bcm2835_mbox_irq, IRQF_NO_SUSPEND, dev_name(dev), + mbox); if (ret) { dev_err(dev, "Failed to register a mailbox IRQ handler: %d\n", ret);