From: bugzilla-daemon@bugzilla.kernel.org
To: linux-usb@vger.kernel.org
Subject: [Bug 208327] xhci_hcd issue transfer event - usb3.0
Date: Wed, 22 Jul 2020 13:19:30 +0000 [thread overview]
Message-ID: <bug-208327-208809-9FakA3dghb@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-208327-208809@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=208327
--- Comment #5 from Mathias Nyman (mathias.nyman@linux.intel.com) ---
Thanks
Logs show we get double (duplicate) events for some ISOC transfers.
Driver expects only one event per TRB and warns when we get a second event for
the same TRB
A wild guess is that this is somehow related to the soft retry of transaction
errors seen on another endpoint on the same device.
Driver tries to recover from the transaction error with a soft retry
three times. the duplicate events seen on the other endpoint occur close to the
soft retries, almost like this ISOC enpoint is being retried as well.
driver will ignore the duplicate events after warning about it, so there
shouldn't be any functional impact, but this isn't how it's supposed to
behave.
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next prev parent reply other threads:[~2020-07-22 13:19 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-26 11:38 [Bug 208327] New: xhci_hcd issue transfer event - usb3.0 bugzilla-daemon
2020-06-26 12:36 ` [Bug 208327] " bugzilla-daemon
2020-07-22 13:19 ` bugzilla-daemon [this message]
2020-07-22 13:39 ` bugzilla-daemon
2020-07-22 13:45 ` bugzilla-daemon
2020-07-22 15:17 ` bugzilla-daemon
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