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| author | Conrad Meyer <cem@FreeBSD.org> | 2019-12-30 01:40:59 +0000 |
|---|---|---|
| committer | Conrad Meyer <cem@FreeBSD.org> | 2019-12-30 01:40:59 +0000 |
| commit | 9b31a8daad1ac57a167b415610beb692c1ae3beb (patch) | |
| tree | 1a6334d988326ea6d9a68e9dc6529f7a44582ed4 | |
| parent | 374c99911ee45c5d2ddd42bc6bcf711a8a66b07e (diff) | |
| download | src-9b31a8daad1ac57a167b415610beb692c1ae3beb.tar.gz src-9b31a8daad1ac57a167b415610beb692c1ae3beb.zip | |
virtio_random(4): Drop no longer needed unload kludge
After r356194, source deregistration no longer races with concurrent use.
Reviewed by: bryanv, markm
Differential Revision: https://reviews.freebsd.org/D22490
Notes
Notes:
svn path=/head/; revision=356195
| -rw-r--r-- | sys/dev/virtio/random/virtio_random.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/sys/dev/virtio/random/virtio_random.c b/sys/dev/virtio/random/virtio_random.c index ceda889ca2d7..bafa8a59dbe7 100644 --- a/sys/dev/virtio/random/virtio_random.c +++ b/sys/dev/virtio/random/virtio_random.c @@ -176,14 +176,6 @@ vtrnd_detach(device_t dev) random_source_deregister(&random_vtrnd); atomic_store_explicit(&g_vtrnd_softc, NULL, memory_order_release); - - /* - * Unfortunately, deregister does not guarantee our source callback - * will not be invoked after it returns. Use a kludge to prevent some, - * but not all, possible races. - */ - tsleep_sbt(&g_vtrnd_softc, 0, "vtrnddet", mstosbt(50), 0, C_HARDCLOCK); - return (0); } |