Re: [PATCH 1/1] Remove of old NCR53C9x/esp family of drivers

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From: Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx>
Date: Fri, 4 Jan 2008 22:05:20 +1100 (EST)

I have a partially written replacement for mac_esp. Unlike the other 
NCR53C9x drivers it needs PIO or pseudo DMA depending on the machine -- so 
it is not as straight-forward as jazz_esp. The new esp_scsi core assumes 
DMA and doesn't support asynch transfers. But I'll try to get it finished 
before 2.6.25 is released.

It does actually support such things.

You can hide it completely your ->irq_pending() handler.  Process any
pending pseudo DMA and return 0 until there is a pseudo DMA error or
the pseudo DMA is complete and the ESP is signalling an IRQ.
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