High CPU usage with sata_nv

["ris" <ris@elsat.net.pl>]

I have motherboard with nforce 590 SLI (MCP55) chipset.
On other systems all its ok.

But i tried a lot o kernels, configurations and always get cpu at 100% when
copying files.
I use SATA II samsung hard drive.

There is my lspci

00:0c.0 IDE interface: nVidia Corporation MCP55 IDE (rev a1) (prog-if 8a [Master
 SecP PriP])
        Subsystem: Unknown device f043:8223
        Flags: bus master, 66MHz, fast devsel, latency 0
        I/O ports at f400 [size=16]
        Capabilities: [44] Power Management version 2

00:0d.0 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a2) (prog-i
f 85 [Master SecO PriO])
        Subsystem: ASUSTeK Computer Inc. Unknown device 8223
        Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 23
        I/O ports at 09f0 [size=8]
        I/O ports at 0bf0 [size=4]
        I/O ports at 0970 [size=8]
        I/O ports at 0b70 [size=4]
        I/O ports at e000 [size=16]
        Memory at fe02d000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: [44] Power Management version 2
        Capabilities: [b0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/2
Enable-
        Capabilities: [cc] HyperTransport: MSI Mapping

00:0d.1 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a2) (prog-i
f 85 [Master SecO PriO])
        Subsystem: ASUSTeK Computer Inc. Unknown device 8223
        Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 22
        I/O ports at 09e0 [size=8]
        I/O ports at 0be0 [size=4]
        I/O ports at 0960 [size=8]
        I/O ports at 0b60 [size=4]
        I/O ports at cc00 [size=16]
        Memory at fe02c000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: [44] Power Management version 2
        Capabilities: [b0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/2
Enable-
        Capabilities: [cc] HyperTransport: MSI Mapping

00:0d.2 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a2) (prog-i
f 85 [Master SecO PriO])
        Subsystem: ASUSTeK Computer Inc. Unknown device 8223
        Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 21
        I/O ports at c800 [size=8]
        I/O ports at c400 [size=4]
        I/O ports at c000 [size=8]
        I/O ports at bc00 [size=4]
        I/O ports at b800 [size=16]
        Memory at fe02b000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: [44] Power Management version 2
        Capabilities: [b0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/2
Enable-
        Capabilities: [cc] HyperTransport: MSI Mapping
------- End of Forwarded Message -------



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