linux-kernel - Re: v6.8.0-rc6: mei_ace_probe / mei_vsc_probe: do not call blocking ops when !TASK

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Message-ID: <ZeC2jss4IAM4aPWy@shine.dominikbrodowski.net>
Date: Thu, 29 Feb 2024 17:53:34 +0100
From: Dominik Brodowski <linux@...inikbrodowski.net>
To: Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc: tomas.winkler@...el.com, mchehab@...nel.org, wentong.wu@...el.com,
	hverkuil-cisco@...all.nl, linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: v6.8.0-rc6: mei_ace_probe / mei_vsc_probe: do not call blocking
 ops when !TASK_RUNNING

Hi Sakari,

Am Thu, Feb 29, 2024 at 07:30:33AM +0000 schrieb Sakari Ailus:
> On Thu, Feb 29, 2024 at 08:21:42AM +0100, Dominik Brodowski wrote:
> > Hi Sakari,
> > 
> > many thanks, this patch helps. Another issue persists, though:
> > 
> > 
> > $ dmesg | cut -c16- | grep -E "(mei|vsc)"
> > mei_me 0000:00:16.0: enabling device (0000 -> 0002)
> > mei_hdcp 0000:00:16.0-b638ab7e-94e2-4ea2-a552-d1c54b627f04: bound 0000:00:02.0 (ops i915_hdcp_ops)
> > mei_pxp 0000:00:16.0-fbf6fcf1-96cf-4e2e-a6a6-1bab8cbe36b1: bound 0000:00:02.0 (ops i915_pxp_tee_component_ops)
> > intel_vsc intel_vsc: silicon stepping version is 0:2
> > mei intel_vsc-92335fcf-3203-4472-af93-7b4453ac29da: deferred probe pending: (reason unknown)
> > mei intel_vsc-5db76cf6-0a68-4ed6-9b78-0361635e2447: deferred probe pending: (reason unknown)
> 
> You'll probably need the IPU bridge patches from that branch, too. Or you
> can try removing the intel-ipu6 driver and modprobing it again.

Everything is built into the kernel here - and the kernel I run is pure
upstream (plus your patch), therefore no intel-ipu6 driver is available
(yet) or active.

> > During suspend entry (s2idle), the following messages are emitted:
> > 
> > ACPI Warning: \_SB.PC00.SPI1.SPFD.CVFD.SID: Insufficient arguments - Caller passed 0, method requires 1 (20230628/nsarguments-232)
> > intel_vsc intel_vsc: silicon stepping version is 0:2
> > PM: Some devices failed to suspend, or early wake event detected
> > ACPI Warning: \_SB.PC00.SPI1.SPFD.CVFD.SID: Insufficient arguments - Caller passed 0, method requires 1 (20230628/nsarguments-232)
> > intel_vsc intel_vsc: silicon stepping version is 0:2
> > vsc-tp spi-INTC1094:00: wakeup firmware failed ret: -110
> > vsc-tp spi-INTC1094:00: wakeup firmware failed ret: -110
> > intel_vsc intel_vsc: wait fw ready failed: -110
> > intel_vsc intel_vsc: hw_start failed ret = -110 fw status = 
> > intel_vsc intel_vsc: unexpected reset: dev_state = RESETTING fw status = 
> > ACPI Warning: \_SB.PC00.SPI1.SPFD.CVFD.SID: Insufficient arguments - Caller passed 0, method requires 1 (20230628/nsarguments-232)
> > intel_vsc intel_vsc: silicon stepping version is 0:2
> 
> I haven't tried suspending. Is this while streaming or not?

No streaming - in fact, without intel-ipu6 available (upstream + your patch,
see above).


I have now tried upstream plus the ipu6 branch; there I get one message
indicating that something is amiss:

	vsc-tp spi-INTC1094:00: wakeup firmware failed ret: -110

And if I try to do a suspend&resume cycle, the machine hangs. A longer
snippet from dmesg from upstream+ipu6 branch:

mei_me 0000:00:16.0: enabling device (0000 -> 0002)
mei_hdcp 0000:00:16.0-b638ab7e-94e2-4ea2-a552-d1c54b627f04: bound 0000:00:02.0 (ops i915_hdcp_ops)
mei_pxp 0000:00:16.0-fbf6fcf1-96cf-4e2e-a6a6-1bab8cbe36b1: bound 0000:00:02.0 (ops i915_pxp_tee_component_ops)
intel-ipu6 0000:00:05.0: enabling device (0000 -> 0002)
intel-ipu6 0000:00:05.0: IPU6 in non-secure mode touch 0x0 mask 0xff
intel-ipu6 0000:00:05.0: FW version: 20230925
intel_vsc intel_vsc: silicon stepping version is 0:2
intel-ipu6 0000:00:05.0: IPU6 in non-secure mode touch 0x0 mask 0xff
intel-ipu6 0000:00:05.0: FW version: 20230925
intel-ipu6 0000:00:05.0: IPU6 in non-secure mode touch 0x0 mask 0xff
intel-ipu6 0000:00:05.0: FW version: 20230925
intel-ipu6 0000:00:05.0: IPU6 in non-secure mode touch 0x0 mask 0xff
intel-ipu6 0000:00:05.0: FW version: 20230925
intel-ipu6 0000:00:05.0: IPU6 in non-secure mode touch 0x0 mask 0xff
intel-ipu6 0000:00:05.0: FW version: 20230925
intel-ipu6 0000:00:05.0: IPU6 in non-secure mode touch 0x0 mask 0xff
intel-ipu6 0000:00:05.0: FW version: 20230925
intel-ipu6 0000:00:05.0: IPU6 in non-secure mode touch 0x0 mask 0xff
intel-ipu6 0000:00:05.0: FW version: 20230925
intel-ipu6 0000:00:05.0: IPU6 in non-secure mode touch 0x0 mask 0xff
intel-ipu6 0000:00:05.0: FW version: 20230925
intel-ipu6 0000:00:05.0: IPU6 in non-secure mode touch 0x0 mask 0xff
intel-ipu6 0000:00:05.0: FW version: 20230925
intel-ipu6 0000:00:05.0: IPU6 in non-secure mode touch 0x0 mask 0xff
intel-ipu6 0000:00:05.0: FW version: 20230925
vsc-tp spi-INTC1094:00: wakeup firmware failed ret: -110
intel-ipu6 0000:00:05.0: IPU6 in non-secure mode touch 0x0 mask 0xff
intel-ipu6 0000:00:05.0: FW version: 20230925
intel-ipu6 0000:00:05.0: IPU6 in non-secure mode touch 0x0 mask 0xff
intel-ipu6 0000:00:05.0: FW version: 20230925
intel-ipu6 0000:00:05.0: Found supported sensor OVTI01A0:00
intel-ipu6 0000:00:05.0: Connected 1 cameras
intel-ipu6 0000:00:05.0: IPU6-v3[465d] hardware version 5


Best,
	Dominik