Hello, On 8/9/2013 7:08 AM, Tejun Heo wrote: > So, there are controllers which actually look at the command code and > thus will choke on new commands and just looking at whether the device > supports the new commands is likely to be insufficient. Have you > tested this? If so, on which controllers / devices? We're likely to > need whitelisting on controller side, I think. Not entirely sure. Non-AHCI controllers scare me since they typically don't come along with specs, or are just finicky. This is especially true since this is a new NCQ command. Anyway, I'll use a flag (as suggested in the other thread) to differentiate between controllers that _should_ be able to handle this properly (AHCI) and other vendor-specific SATA controllers. Thanks, Marc -- 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