macio: set res_count value to 0 after non-block ATAPI DMA transfers
res_count should be set to the number of outstanding bytes after a DBDMA
request. Unfortunately this wasn't being set to zero by the non-block
transfer codepath meaning drivers that checked the descriptor result for
such requests (e.g reading the CDROM TOC) would assume from a non-zero result
that the transfer had failed.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
(cherry picked from commit
16275edb342342625cd7e7ac2048436474465b50)
Conflicts:
hw/ide/macio.c
* removed context dependancy on
ddd495e5
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>