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virtio: don't crash when device is buggy
authorMichael S. Tsirkin <mst@redhat.com>
Fri, 28 Sep 2012 05:35:16 +0000 (15:05 +0930)
committerRusty Russell <rusty@rustcorp.com.au>
Fri, 28 Sep 2012 05:35:16 +0000 (15:05 +0930)
commit5543a6ac31eb4bfd8d938db6b234ce833d14e04e
treedf471800d5701f2c0db0d2a1d4659fbb0549473etree | snapshot
parenteccbb05a64fef867362ff05b5d266757e3c82b36commit | diff
virtio: don't crash when device is buggy

Because of a sanity check in virtio_dev_remove, a buggy device can crash
kernel.  And in case of rproc it's userspace so it's not a good idea.
We are unloading a driver so how bad can it be?
Be less aggressive in handling this error: if it's a driver bug,
warning once should be enough.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
drivers/virtio/virtio.c diff | blob | history
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