linux-kernel - Re: [PATCH] libata: remove experimental tag on PATA drivers

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Date:	Fri, 13 Nov 2009 23:26:52 +0100
From:	Alejandro Riveira Fernández 
	<ariveira@...il.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	Robert Hancock <hancockrwd@...il.com>,
	"linux-kernel" <linux-kernel@...r.kernel.org>,
	ide <linux-ide@...r.kernel.org>, Jeff Garzik <jgarzik@...ox.com>
Subject: Re: [PATCH] libata: remove experimental tag on PATA drivers

El Fri, 13 Nov 2009 18:25:15 +0000
Alan Cox <alan@...rguk.ukuu.org.uk> escribió:


> 
> > PATA_ALI: EXPERIMENTAL
> > - ATAPI DMA is still broken
> 
> Not experimental as we default to not doing ATAPI DMA. Glancing over the
> code I notice the ALI C2/C3 workaround probably wants adding to the old
> driver as it can do nasty things otherwise. (See the reset function in
> the pata_ali driver)

 FWIW I have a Motherboard with Ali chipset and have been using ATAPI DMA
(forcing it via proc) without issues since the DMA was disabled by default.
 
 lspci -v
 IDE interface: ALi Corporation M5229 IDE (rev c7) (prog-if 8a [Master SecP PriP])
 Subsystem: ASRock Incorporation Device 5229
 Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 21
 [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [disabled] [size=8]
 [virtual] Memory at 000003f0 (type 3, non-prefetchable) [disabled] [size=1]
 [virtual] Memory at 00000170 (32-bit, non-prefetchable) [disabled] [size=8]
 [virtual] Memory at 00000370 (type 3, non-prefetchable) [disabled] [size=1]
 I/O ports at ff00 [size=16]
 Capabilities: <access denied>
 Kernel driver in use: pata_ali
 Kernel modules: ata_generic



> 

> Alan
> 

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