From patchwork Sun Jun 30 15:36:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Wahren X-Patchwork-Id: 808977 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 F2B331534FB; Sun, 30 Jun 2024 15:37:51 +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=1719761873; cv=none; b=boeyDKCb3azHIxauREMbjwmMeL2veejz5yYhrDyNSodyAX4IJWrZr2iHmP4Ae10/rDUFKnkdQI+8bVLRWeJsQYNRM26Lhv6UTpCq/j7emtjXlnGLckw7L2NR8ZUKmsonDUixrYtfaruHgx92JOZCiIKZTkc4o+QLF9do/Irrdw8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719761873; c=relaxed/simple; bh=Snna4vWkVe7VrHMEWqWpceKl+iHu1h0a2wRLIPoC/ms=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; 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b=HqwyRkuoE+qRsI0+bsGC/P5S+k1ntwg9R2iHcaSt4zBPCsVFbokHB3+hnVE6g+4K IZ2akmhbed3E639JN7lTkCI8LvV6gP5hN4McqVggJj69w+A6h2Z8ZItSK/070OMkn RnoD50XogkbvhLocYP7iobTjkghA84DEPBP1rY8PCRmXUJtwz6KJkZmFJEfXGtfwY jTYH0JiE2zcfI3j1LR6rm6vWJ4gICa5tkgTY77NyIORF9n2T91GjYrnFqTz2CEWwa ErloGGNjt2nxnwCGsA9Oc09dswosSEfyT9A1VvEzsMHv3LhiR1vAlGXZx0RsF7xvy k6067PpRJRfl2m7XHw== 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 1Msq2E-1s8baQ3Q64-00ufFH; Sun, 30 Jun 2024 17:37:18 +0200 From: Stefan Wahren To: Greg Kroah-Hartman , Florian Fainelli , Ray Jui , Scott Branden , Maxime Ripard , Thomas Gleixner , Jassi Brar , Ulf Hansson , Jiri Slaby , Minas Harutyunyan Cc: Dave Stevenson , Maarten Lankhorst , Thomas Zimmermann , David Airlie , Daniel Vetter , Lukas Wunner , 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 02/11] mailbox: bcm2835: Fix timeout during suspend mode Date: Sun, 30 Jun 2024 17:36:43 +0200 Message-Id: <20240630153652.318882-3-wahrenst@gmx.net> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240630153652.318882-1-wahrenst@gmx.net> References: <20240630153652.318882-1-wahrenst@gmx.net> Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Provags-ID: V03:K1:+eS7VjvylTmd2ce6rQQXNQVZzMe2xTWuYOen4qDXgVNExxnGsfd DRRDc00e/b7oFfw1PtqTPjPGxawx4evTppOhjkFTdloe2+teyYa0P9+O3rja0FohGjpcLGf QZAa1N0wPmLsjx9sMQ69FB6QKU1teVj1vxft+Q/rpDQoxKFmkJz+s+7F54inVXqEdNkGiIO 85++VrQYxeuQAPABACv2Q== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:8EW4z9MobNc=;JJUIZttLMZqr1SkeydBcjP1xOPu Unjiw4xtRYZWx+8jWNS7/NFujaE44rLoAreuM9ovzixRSOHuwaiX5IvDXc/ZBWuIS4Dx+FT26 WmSSk9Xr0y7JZyOGarctrjVEZqeHcm69gMSEGwcXeQfIF9c/GkufHP17W/AeO5QqJKa7hxkpC qSTfqxiSahJcX9E4ihmngP9fID9fZMEagemuUc1EPX/exRL2YMAqqwK/D31hzCoznCsydQmrX G/ti47qlJ+GHDSD+WFTnuFtJ0EqHhfj60z3EHojwBJJ7xO34z8+9dusRBtT8h+NXARmlx6Jd/ d61c1fWDeZZ3AeiYVinXdj06R/RL56GpV+fNPpXhnKpBn95fw4/kB/MMGpjnLezLnD4QAEEiv KtTN7E4dOlumDkeQFdgBp4/9GdAqfQbQF3sD/h/7n9DV4EzjrUoZfrMV5fKZz/cj4uLeLHAMs bu7vHdtNBtQiSz2twOkSJunW3EJkENGSBcrgZuO56v/amzdzJVihzreqRTJ70L5/zNx3G3ogR aG8NJWb+/WNa/HyEySRyOzEJ5OOmG0vGEqCj6yMYi/oHCzDQG8vN4afVwj7WtQ85iea/gspxv QsOHYQLTTorNxa4lLkIVBrWi+ux5KgiEgubR87zoCcB3sFilayjUJftidRGic8eY9/jYcW2et 3qMbMpA9jqp5AhK8g0Y2uwqASCSYgCRIhsvcfhiB33cT3w1zLgkYreCSOdwlqAhKSUZ1hrYzy xtMd9N578XdAkaW1MnqYyWn7IF9Mh2/cYZy9WgweNk2Te24+8SlVCftIgk4GYxjGuKSxWqksu aLO+1f5vwa7QqijA/YXsn08LcgY7Zct48NRYwB70/OJv0= 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);