Hello, On 09/25/2010 01:26 AM, Robert Hancock wrote: >> And here's an example of the bug, which should work (as a demo) >> for most folks out there with the same controller ahci / JMB360: >> >> Here, I'll use hdparm to do a "set acoustic" command >> on a drive which does NOT have the "Acoustic Management" feature set. >> Just look for the fd fd fd strings in the returned data, >> and notice how the final IDENTIFY at the end works, but returns >> bad ATA status 0x51 from the stale result_tf: > > The d2h_fis area is supposed to be updated by the controller with > the last FIS received from the device. Maybe this controller just > isn't doing that for some reason? Hmm... one possibility is that the controller takes some time to update the area and the driver is reading it off too early. Maybe adding a delay would resolve the issue? Mark, do you know whether this problem is isolated to JMB360? Thanks. -- tejun -- 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
