[PATCHSET 1/4] libata: misc updates in preparation of PMP support

[Tejun Heo <htejun@gmail.com>]

Hello,

This patchset contains the following 12 patches updating various
aspects of libata in preparation of PMP support.

#01 [PATCH] libata: update EH report formatting
#02 [PATCH] libata: implement AC_ERR_NCQ
#03 [PATCH] libata: make ->scr_read/write callbacks return error code
#04 [PATCH] ahci: make NO_NCQ handling more consistent
#05 [PATCH] ahci: implement SCR_NOTIFICATION r/w
#06 [PATCH] libata: improve SATA PHY speed down logic
#07 [PATCH] libata: quickly trigger SATA SPD down after debouncing failed
#08 [PATCH] libata: improve SCSI scan failure handling
#09 [PATCH] libata: reorganize ata_ehi_hotplugged()
#10 [PATCH] libata: clear HOTPLUG flag after a reset
#11 [PATCH] libata: schedule probing after SError access failure during autopsy
#12 [PATCH] libata: implement EH fast drain

#01-03 are mostly trivial.  #04-05 are minor updates to ahci.  #06-#12
improves EH behaviors including SATA speed down, hotplug handling and
fast draining if EH is pending.  Please refer to individual commit
messages for more info.

This patchset is on top of

  libata-dev#upstream (4e1ae96828f6cee7b89ab8ca474c150fe211afd8)

Thanks.

--
tejun