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From: Alex Williamson <alex.williamson@redhat.com>
To: qemu-devel@nongnu.org, agraf@suse.de
Cc: amit.shah@redhat.com, alex.williamson@redhat.com, mst@redhat.com
Subject: [Qemu-devel] [PATCH] virtio-pci: fix bus master bug setting on load
Date: Thu, 17 Jun 2010 09:15:02 -0600	[thread overview]
Message-ID: <20100617151502.9916.3597.stgit@localhost.localdomain> (raw)

The comment suggests we're checking for the driver in the ready
state and bus master disabled, but the code is checking that it's
not in the ready state.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Found-by: Amit Shah <amit.shah@redhat.com>
---

 hw/virtio-pci.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index e101fa0..7a86a81 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -155,7 +155,7 @@ static int virtio_pci_load_config(void * opaque, QEMUFile *f)
 
     /* Try to find out if the guest has bus master disabled, but is
        in ready state. Then we have a buggy guest OS. */
-    if (!(proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) &&
+    if ((proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) &&
         !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) {
         proxy->bugs |= VIRTIO_PCI_BUG_BUS_MASTER;
     }

             reply	other threads:[~2010-06-17 15:15 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-17 15:15 Alex Williamson [this message]
2010-06-17 15:24 ` [Qemu-devel] Re: [PATCH] virtio-pci: fix bus master bug setting on load Michael S. Tsirkin
2010-06-17 15:57 ` Amit Shah
2010-06-17 16:01 ` Alexander Graf
2010-06-17 16:40 ` Juan Quintela
2010-06-23  1:48 ` [Qemu-devel] " Anthony Liguori

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