[LinuxPPS] 10 May 00:15 - sata_promise: SATAII-150/300 TX4 port numbering fix

[linuxpps: Mikael Pettersson <>]

sata_promise: SATAII-150/300 TX4 port numbering fix  
  
There is a known problem with sata_promise on SATAII-150/300 TX4  
controller cards: it enumerates drives in an order that differs  
from the port numbers printed on the controller cards. However,  
Promise's BIOS and Linux driver both get the order right.  
  
I investigated Promise's Linux driver (v1.01.0.23), and found  
that it explicitly changes the mapping from logical port number  
to ATA engine MMIO address on the SATAII TX4 cards. It does this  
on all SATAII TX4 cards, without inspecting revision etc. The  
SATAII TX2plus cards continue to use the same mapping that was  
used for the first-generation chips.  
  
This patch updates sata_promise to use the new port number to  
ATA engine mapping on SATAII TX4 cards, which fixes the drive  
enumeration order problem on those cards. Tested on several  
1st and 2nd generation TX2plus and TX4 chips.  
  
Signed-off-by: Mikael Pettersson   
Signed-off-by: Jeff Garzik   
  
drivers/ata/sata_promise.c

URL: http://gitweb.enneenne.com/?p=linuxpps;a=commit;h=5ac2fe57569c5fbbd4288e3e7fead332b4300ef0