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[RFC,v2,14/49] ide pci: reset status field before loading the vmstate

Message ID 20140717110317.8352.46660.stgit@PASHA-ISP
State New
Headers show

Commit Message

Pavel Dovgalyuk July 17, 2014, 11:03 a.m. UTC 
This patch resets status field before loading the state of IDE BMDMA device.
Resetting status is needed for replay, because it does not reset whole virtual
machine before loading state of the VM.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
---
 hw/ide/pci.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
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Patch

diff --git a/hw/ide/pci.c b/hw/ide/pci.c
index 6257a21..47ab24d 100644
--- a/hw/ide/pci.c
+++ b/hw/ide/pci.c
@@ -382,6 +382,15 @@  static bool ide_bmdma_status_needed(void *opaque)
     return ((bm->status & abused_bits) != 0);
 }
 
+static int ide_bmdma_pre_load(void *opaque)
+{
+    BMDMAState *bm = opaque;
+    /* Reset is not performed in replay mode,
+       so reset status manually to allow ide_bmdma_post_load function initialize it. */
+    bm->status = 0;
+    return 0;
+}
+
 static void ide_bmdma_pre_save(void *opaque)
 {
     BMDMAState *bm = opaque;
@@ -434,6 +443,7 @@  static const VMStateDescription vmstate_bmdma = {
     .name = "ide bmdma",
     .version_id = 3,
     .minimum_version_id = 0,
+    .pre_load  = ide_bmdma_pre_load,
     .pre_save  = ide_bmdma_pre_save,
     .fields = (VMStateField[]) {
         VMSTATE_UINT8(cmd, BMDMAState),