tree a8935490cdd374aba3a804ba9f79d1aed67db36d
parent 81cfb8864c73230eb1c37753aba517db15cf4d8f
author Jeff Garzik <jgarzik@pobox.com> 1130665482 -0500
committer Jeff Garzik <jgarzik@pobox.com> 1130665482 -0500

[libata] change ata_qc_complete() to take error mask as second arg

The second argument to ata_qc_complete() was being used for two
purposes: communicate the ATA Status register to the completion
function, and indicate an error.  On legacy PCI IDE hardware, the latter
is often implicit in the former.  On more modern hardware, the driver
often completely emulated a Status register value, passing ATA_ERR as an
indication that something went wrong.

Now that previous code changes have eliminated the need to use drv_stat
arg to communicate the ATA Status register value, we can convert it to a
mask of possible error classes.

This will lead to more flexible error handling in the future.