tree fb6a52735b9df65df46d7fe44d79bcb7e678c901
parent 3bac85d33716d9024afb8a262a39032bc0bba3ed
author Kevin Wolf <kwolf@redhat.com> 1363189986 +0100
committer Kevin Wolf <kwolf@redhat.com> 1368019729 +0200

ide: Reset BMIDEA bit when the bus master is stopped

The device is supposed to reset the Bus Master IDE Active bit in the
status register when 0 is written to the Start/Stop Bus Master bit in
the command register.

In the common cases this happens automatically because bdrv_drain_all()
flushes the requests, but with a large PRDT it could remain set.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>