On 10-10-04 03:42 PM, Jeff Garzik wrote:
On 10/04/2010 03:35 PM, Mark Lord wrote:
Yeah. Non-data commands still get a (correct) updated result_tf from AHCI,
but data commands don't get one, unless they fail.
Weird, but I've worked around it now.
Might be that we just get a single-bit "OK" notification from hardware for successfully completed commands, a la NCQ's SDB FIS.
Which opcodes are you using? I see set-acoustic-mgmt in one email...
opcode 0xec : IDENTIFY
The result_tf it receives is from whatever non-data command last preceeds it.
So if the previous non-data command failed (eg. hdparm -Z),
then the IDENTIFY command actually works, but appears to fail.
Cheers
--
To unsubscribe from this list: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
