| commit | edc62dda419e4f6ee40548fa3deb9baf8b369e29 | |
| author | Michael S. Tsirkin <mst@redhat.com> | |
| Thu, 24 Jun 2010 04:49:06 +0000 (23 22:49 -0600) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Mon, 2 Aug 2010 17:20:42 +0000 (2 10:20 -0700) | ||
| tree | 23d8607ff1fac1be358e68952499e6a2e3d1013e | treesnapshot (tar.gz zip) |
| parent | 6c70817654bdc33af7eca286b4c734ce03f9eeb5 | commitdiff |
virtio-pci: disable msi at startup
commit b03214d559471359e2a85ae256686381d0672f29 upstream.
virtio-pci resets the device at startup by writing to the status
register, but this does not clear the pci config space,
specifically msi enable status which affects register
layout.
This breaks things like kdump when they try to use e.g. virtio-blk.
Fix by forcing msi off at startup. Since pci.c already has
a routine to do this, we export and use it instead of duplicating code.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: linux-pci@vger.kernel.org
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit b03214d559471359e2a85ae256686381d0672f29 upstream.
virtio-pci resets the device at startup by writing to the status
register, but this does not clear the pci config space,
specifically msi enable status which affects register
layout.
This breaks things like kdump when they try to use e.g. virtio-blk.
Fix by forcing msi off at startup. Since pci.c already has
a routine to do this, we export and use it instead of duplicating code.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: linux-pci@vger.kernel.org
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| drivers/pci/pci.c | diffblobblamehistory | |
| drivers/virtio/virtio_pci.c | diffblobblamehistory |