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authorKevin Wolf <kwolf@redhat.com>2013-03-13 16:53:06 +0100
committerKevin Wolf <kwolf@redhat.com>2013-05-08 15:28:49 +0200
commitb39f96126549e2834152211a99919917423d2212 (patch)
treefb6a52735b9df65df46d7fe44d79bcb7e678c901
parent3bac85d33716d9024afb8a262a39032bc0bba3ed (diff)
downloadqemu-arm-b39f96126549e2834152211a99919917423d2212.tar.gz
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>
-rw-r--r--hw/ide/pci.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/ide/pci.c b/hw/ide/pci.c
index a310975391..635a364dd8 100644
--- a/hw/ide/pci.c
+++ b/hw/ide/pci.c
@@ -312,6 +312,7 @@ void bmdma_cmd_writeb(BMDMAState *bm, uint32_t val)
bdrv_drain_all();
assert(bm->bus->dma->aiocb == NULL);
}
+ bm->status &= ~BM_STATUS_DMAING;
} else {
bm->cur_addr = bm->addr;
if (!(bm->status & BM_STATUS_DMAING)) {