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| author | Rusty Russell <rusty@rustcorp.com.au> | 2008-04-07 08:30:28 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-08 00:14:22 +0400 |
| commit | 2557a933b795c1988c721ebb871cd735128bb9cb (patch) | |
| tree | 96581bd5acac44bbe0399aa445197509d9ae60ff /arch | |
| parent | 4cac04dd63fa3b202ee313ed1afbbd135ab887ee (diff) | |
| download | linux-2557a933b795c1988c721ebb871cd735128bb9cb.tar.xz | |
virtio: remove overzealous BUG_ON.
The 'disable_cb' callback is designed as an optimization to tell the host
we don't need callbacks now. As it is not reliable, the debug check is
overzealous: it can happen on two CPUs at the same time. Document this.
Even if it were reliable, the virtio_net driver doesn't disable
callbacks on transmit so the START_USE/END_USE debugging reentrance
protection can be easily tripped even on UP.
Thanks to Balaji Rao for the bug report and testing.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
CC: Balaji Rao <balajirrao@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions