From: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
To: Pavel Roskin <proski@gnu.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.cz>,
linux-kernel@vger.kernel.org
Subject: Re: serial8250: bogus low_latency destabilizes kernel, need sanity check
Date: Tue, 14 Jan 2014 12:08:11 +0000 [thread overview]
Message-ID: <20140114120811.648571ea@alan.etchedpixels.co.uk> (raw)
In-Reply-To: <20140113193547.47b7a646@IRBT4585>
> Maybe we should unset the low_latency flag as soon as DMA fails? There
> are two flags, one is state->uart_port->flags and the other is
> port->low_latency. I guess we need to unset both.
Well low latency and DMA are pretty much exclusive in the real world so
probably DMA ports shouldn't allow low_latency to be set at all in DMA
mode.
Alan
next prev parent reply other threads:[~2014-01-14 12:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-14 0:35 Pavel Roskin
2014-01-14 12:08 ` One Thousand Gnomes [this message]
2014-01-14 16:24 ` Pavel Roskin
2014-02-01 15:09 ` Peter Hurley
2014-02-03 11:10 ` One Thousand Gnomes
2014-02-04 12:42 ` Peter Hurley
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