From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Cc: Frederic Weisbecker <frederic@kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Alan Stern <stern@rowland.harvard.edu>,
linux-usb@vger.kernel.org
Subject: [RFC] usb: hcd: complete URBs in threaded-IRQ context instead of tasklet
Date: Mon, 16 Apr 2018 16:01:04 +0200 [thread overview]
Message-ID: <20180416140103.33s2xarrxxeecttk@linutronix.de> (raw)
On 2018-03-08 10:57:39 [+0100], To Mauro Carvalho Chehab wrote:
> On 2018-02-27 14:39:34 [-0300], Mauro Carvalho Chehab wrote:
> > Hi Sebastian,
> Hi Mauro,
>
> > Sorry for taking some time to test it, has been busy those days...
> :)
>
> > Anyway, I tested it today. Didn't work. It keep losing data.
>
> Okay, this was unexpected. What I learned from the thread is that you
> use the dwc2 controller and once upgrade to a kernel which completes the
> URBs in BH context then you starting losing data from your DVB-s USB
> device. And it was assumed that this is because BH/ksoftirq is getting
> "paused" if it is running for too long. If that is the case then a
> revert of "let us complete the URB in BH context" should get it working
> again. Is that so?
ping
Sebastian
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next prev reply other threads:[~2018-04-16 14:01 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-16 17:04 [RFC] usb: hcd: complete URBs in threaded-IRQ context instead of tasklet Sebastian Andrzej Siewior
2018-02-27 17:39 ` Mauro Carvalho Chehab
2018-03-08 9:57 ` Sebastian Andrzej Siewior
2018-04-16 14:01 ` Sebastian Andrzej Siewior [this message]
2020-12-04 6:22 ` [RFC PATCH] " Davidlohr Bueso
2020-12-05 7:11 ` Davidlohr Bueso
-- strict thread matches above, loose matches on Subject: below --
2018-02-16 18:29 [RFC] " Alan Stern
2018-02-16 20:38 Sebastian Andrzej Siewior
2018-02-16 21:46 Alan Stern
2018-02-22 16:19 Sebastian Andrzej Siewior
2018-02-22 18:45 Alan Stern
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