linux-kernel - Re: [PATCH] sata_nv: fix ADMA freeze/thaw/irq

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Date:	Wed, 09 May 2007 20:17:28 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Robert Hancock <hancockr@...w.ca>
CC:	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-ide@...r.kernel.org, Tejun Heo <htejun@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>, web01@...zon.com
Subject: Re: [PATCH] sata_nv: fix ADMA freeze/thaw/irq_clear issues

Robert Hancock wrote:
> This patch fixes some problems with ADMA-capable controllers with regard 
> to freeze,
> thaw and irq_clear libata callbacks. Freeze and thaw didn't switch the 
> ADMA-specific
> interrupts on or off, and more critically the irq_clear function didn't 
> respect
> the restriction that the notifier clear registers for both ports have to 
> be written
> at the same time even when only one port is being cleared. This could 
> result in
> timeouts on one port when error handling (i.e. as a result of hotplug)
> occurred on the other port.
> 
> As well, this fixes some issues in the interrupt handler: we shouldn't 
> check any
> ADMA status if the port has ADMA switched off because of an ATAPI 
> device, and
> it also checks to see if any ADMA interrupt has been raised even when we 
> are in
> port-register mode.
> 
> Signed-off-by: Robert Hancock <hancockr@...w.ca>

applied

please properly word-wrap your patch descriptions in the future


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