Re: [PATCH] (pata-2.6 fix queue) cmd64x: fix recovery time calculation

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On Friday 09 February 2007 23:29, Sergei Shtylyov wrote:
> The driver wrongly takes the address setup time into account when calculating
> the PIO recovery time -- this leads to slight overclocking of the PIO modes 0
> and 1 (so, the prayers failed to help, as usual :-).  Rework the code to be
> calculating recovery clock count as a difference between the total cycle count
> and the active count (we don't need to calculate the recovery time itself since
> it's not specified for the PIO modes 0 to 2, and for modes 3 and 4 this formula
> gives enough recovery time anyway in the chip's supported PCI frequency range).
> 
> This patch has been inspired by reading the datasheets and looking at what the
> libata driver does; it has been compile-tested only (as usual :-) but anyway,
> the new code gives the same or longer recovery times than the old one...
> 
> Signed-off-by: Sergei Shtylyov <sshtylyov@xxxxxxxxxxxxx>

applied
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