2011/1/7 Ben Dooks [off-list ref]:

On Fri, Jan 07, 2011 at 02:04:33AM +0800, Lin Mac wrote:

quoted

Hi Jeff,

2011/1/7 ?[off-list ref]:

quoted

From: Mac Lin <redacted>

CNS3xxx override the softreset function of ahci_platform ahci_softreset by
cns3xxx_ahci_softreset, which would retry ahci_do_softreset again with pmp=0 if
pmp=15 failed, for the controller has problem receiving D2H Reg FIS of the
different PMP setting of the previous sent H2D Reg FIS.

Following describe the isssue with original ahci_platform driver on
linux-2.6.37-rc3, arm/cns3xxx.

If CONFIG_SATA_PMP is enabled, while not using multiplier and connect the disks
directly to the board, the disk cannot be found due to software reset always

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complicated if more SoC-specific code added.
I really prefer the original way.

Is there a reference to the original?

v2: http://www.spinics.net/lists/linux-ide/msg39766.html

Best Regards,
Mac Lin