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From: Ulrich Huber <ulrich@huberulrich.de>
To: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: linux-usb@vger.kernel.org
Subject: Re: ucsi_acpi GET_CONNECTOR_STATUS failed (-5)
Date: Wed, 25 Aug 2021 15:53:28 +0200	[thread overview]
Message-ID: <0e77017d-9358-a691-6293-234fcbab6a31@huberulrich.de> (raw)
In-Reply-To: <YSX7hZnCoFSXTFJe@kuha.fi.intel.com>

Hi Heikki,
Thanks for the quick answer.
> Thanks for the report. Can you test this with kernel v5.10?

I tested kernel v5.10 and could not reproduce this specific error. 
Instead I received the following warning on a single occasion:

ucsi_acpi USBC000:00: UCSI_GET_PDOS returned 0 bytes

Right before I received this warning, I plugged in and immediately 
unplugged the charging cable again. So I might have disrupted the driver 
during the retrieval of the new device state.

> I'm wondering if commit 217504a05532 ("usb: typec: ucsi: Work around
> PPM losing change information") causes that GET_CONNECTOR_STATUS
> failure.

Quite interesting, as I thought this as the most likely culprit as well 
when I took a look at the driver.

As I have to build the kernel v5.14-rc7 manually to include another 
bugfix, I'll throw in a few more debug messages to find out which step 
fails and if possible to get some more details on the cause. Could you 
point me to things I should take a look at, to narrow down the issue?

Thanks,

Ulrich


  reply	other threads:[~2021-08-25 13:53 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-23 14:29 ucsi_acpi GET_CONNECTOR_STATUS failed (-5) Ulrich Huber
2021-08-25  8:12 ` Heikki Krogerus
2021-08-25 13:53   ` Ulrich Huber [this message]
2021-08-25 18:37     ` Ulrich Huber
2021-08-26 14:25       ` Heikki Krogerus
2021-08-26 19:50         ` Ulrich Huber
2021-08-28  9:48           ` Heikki Krogerus
2021-08-29 11:02             ` Ulrich Huber
2021-09-09 12:19               ` Heikki Krogerus
2021-09-09 12:24                 ` Ulrich Huber
2021-09-13 13:32                   ` Heikki Krogerus

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