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-ayl...@ilande.co.uk>
---
hw/ide/macio.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/ide/macio.c b/hw/ide/macio.c
index 5a326af..76f97c2 100644
--- a/hw/ide/macio.c
+++ b/hw/ide/macio.c
@@ -273,6 +273,7 @@ static void pmac_ide_atapi_transfer_cb(void *opaque, int
ret)
s->io_buffer_size = MIN(s->io_buffer_size, io->len);
dma_memory_write(&address_space_memory, io->addr, s->io_buffer,
s->io_buffer_size);
+ io->len = 0;
ide_atapi_cmd_ok(s);
m->dma_active = false;
goto done;
--
1.7.10.4
