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Date: Tue, 17 Sep 2013 12:41:09 +0400
From: Lev Serebryakov <lev@FreeBSD.org>
Organization: FreeBSD Project
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To: Hans Petter Selasky <hans.petter.selasky@bitfrost.no>
Subject: Re: umcs (4-Port-USB-serial) triggering way too much ehci IRQs
In-Reply-To: <zarafa.5237e529.2bc6.08fde6eb34c27a87@mail.lockless.no>
References: <52372DBA.6020703@omnilan.de>
 <zarafa.5237e529.2bc6.08fde6eb34c27a87@mail.lockless.no>
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Cc: Harald Schmalzbauer <h.schmalzbauer@omnilan.de>,
 FreeBSD Stable <freebsd-stable@FreeBSD.org>, freebsd-usb@freebsd.org
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Hello, Hans.
You wrote 17 =D1=81=D0=B5=D0=BD=D1=82=D1=8F=D0=B1=D1=80=D1=8F 2013 =D0=B3.,=
 9:14:17:

HPS> Check using usbdump -i usbusX -f Y -s 65536 -vvv
HPS> what is going on. Maybe some USB transfers are returning zero length d=
ata from the chip.
  After closing port I disable all interrupts in chip, I've checked this (it
 was my first thought: ``I forget to disable internal interrupts on device
 close''), so, theoretically, it should stop spam system with interrupts...


--=20
// Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>