From: bugzilla-daemon@bugzilla.kernel.org
To: linux-usb@vger.kernel.org
Subject: [Bug 212045] New: dwc2 gadget mode read call blocks
Date: Wed, 03 Mar 2021 23:51:23 +0000 [thread overview]
Message-ID: <bug-212045-208809@https.bugzilla.kernel.org/> (raw)
https://bugzilla.kernel.org/show_bug.cgi?id=212045
Bug ID: 212045
Summary: dwc2 gadget mode read call blocks
Product: Drivers
Version: 2.5
Kernel Version: 5.9
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: USB
Assignee: drivers_usb@kernel-bugs.kernel.org
Reporter: tomasz@grobelny.net
Regression: No
When implementing USB gadget on Odroid N2 I write descriptors for two endpoints
so I get ep0, ep1 and ep2 files. I open those files and try to read from ep0
and ep2. While ep0 more or less works, for ep2 I get weird behaviour: the
select() call returns 1 indicating that there is data to read and then read()
call blocks. It happens even if I set the file descriptor to O_NONBLOCK. Here
is the kernel log: https://pastebin.pl/view/aaa2d7f0
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next reply other threads:[~2021-03-04 0:28 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-03 23:51 bugzilla-daemon [this message]
2021-03-05 9:30 ` [Bug 212045] dwc2 gadget mode read call blocks bugzilla-daemon
2021-03-05 10:37 ` bugzilla-daemon
2021-03-10 10:13 ` bugzilla-daemon
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