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Mark McLoughlin 3fff0179e3 virtio-pci: do not oops on config change if driver not loaded ... The host really shouldn't be notifying us of config changes before the device status is VIRTIO_CONFIG_S_DRIVER or VIRTIO_CONFIG_S_DRIVER_OK. However, if we do happen to be interrupted while we're not attached to a driver, we really shouldn't oops. Prevent this simply by checking that device->driver is non-NULL before trying to notify the driver of config changes. Problem observed by doing a "set_link virtio.0 down" with QEMU before the net driver had been loaded. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2009-02-02 19:17:56 -08:00
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Kconfig	virtio: balloon driver	2008-02-04 23:50:13 +11:00
Makefile	virtio: balloon driver	2008-02-04 23:50:13 +11:00
config.c	Virtio interface	2007-10-23 15:49:54 +10:00
virtio.c	virtio: struct device - replace bus_id with dev_name(), dev_set_name()	2008-12-30 09:25:56 +10:30
virtio_balloon.c	virtio: avoid implicit use of Linux page size in balloon interface	2008-12-30 09:26:04 +10:30
virtio_pci.c	virtio-pci: do not oops on config change if driver not loaded	2009-02-02 19:17:56 -08:00
virtio_ring.c	virtio: hand virtio ring alignment as argument to vring_new_virtqueue	2008-12-30 09:26:03 +10:30