From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Helmut Toplitzer <pvrusb2@toplitzer.net>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
linux-ide@vger.kernel.org, dbrownell@users.sourceforge.net,
linux-usb-devel@lists.sourceforge.net
Subject: Re: [linux-usb-devel] Re: BUG?: VIA IDE transfer-rate problem
Date: Thu, 19 Jan 2006 01:05:02 +0000 [thread overview]
Message-ID: <1137632702.1760.29.camel@localhost.localdomain> (raw)
In-Reply-To: <200601190041.36138.pvrusb2@toplitzer.net>
On Iau, 2006-01-19 at 00:41 +0100, Helmut Toplitzer wrote:
> Ok. Was just a bit digging through the sourcecode. Found a
> function called disable_hlt. Some further digging.
> Found in drivers/block/floppy.c a usage of disable_hlt.
> It's called (if I haven't missunderstood something)
> whenever a DMA transfer is setup. enable_hlt is called
> when a transfer stops/is cancled etc...
Yes this deals with some errata cases
> Does such thing makes sense for IDE DMA-transfers too?
> (Maybe I've missed something)
Only for the CS5510 Cyrix as far as I know, and I really ought to fix
that in the new libata driver.
Generally speaking hlt is good, it takes the CPU off the bus and frees
it up for the other users.
next prev parent reply other threads:[~2006-01-19 1:05 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-01-13 18:09 BUG?: VIA IDE transfer-rate problem Helmut Toplitzer
2006-01-13 18:10 ` Helmut Toplitzer
2006-01-16 17:49 ` Helmut Toplitzer
2006-01-17 9:55 ` Gentoopower
2006-01-17 10:22 ` Helmut Toplitzer
2006-01-17 13:17 ` Bartlomiej Zolnierkiewicz
2006-01-17 14:19 ` [linux-usb-devel] " Rene Herman
2006-01-17 16:03 ` Helmut Toplitzer
2006-01-18 10:27 ` Bartlomiej Zolnierkiewicz
2006-01-18 14:36 ` Helmut Toplitzer
2006-01-18 15:54 ` [linux-usb-devel] " David Brownell
2006-01-18 16:13 ` Bartlomiej Zolnierkiewicz
2006-01-18 23:41 ` Helmut Toplitzer
2006-01-19 1:05 ` Alan Cox [this message]
2006-01-19 7:21 ` Helmut Toplitzer
2006-01-19 11:51 ` Erik Slagter
2006-01-19 12:19 ` Bartlomiej Zolnierkiewicz
2006-01-19 13:31 ` Helmut Toplitzer
2006-01-19 19:59 ` Helmut Toplitzer
2006-01-19 21:29 ` [linux-usb-devel] " Alan Stern
2006-01-20 11:27 ` Helmut Toplitzer
2006-01-20 15:11 ` Rene Herman
2006-01-20 15:44 ` Helmut Toplitzer
2006-01-22 17:16 ` Rene Herman
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