diff options
| author | Ingo Molnar <mingo@kernel.org> | 2018-06-26 09:02:41 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-06-26 09:02:41 +0200 |
| commit | f446474889c06883a3879faa0896e2359e812a6b (patch) | |
| tree | 95634685d56dd532d1e9b73fbd07ca389296911b /drivers/char/hw_random/core.c | |
| parent | 01bdee64f9cf8e15f998bf52789ed9d0ebdfa621 (diff) | |
| parent | 6f0d349d922ba44e4348a17a78ea51b7135965b1 (diff) | |
Merge branch 'linus' into perf/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/char/hw_random/core.c')
| -rw-r--r-- | drivers/char/hw_random/core.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c index 91bb98c42a1c..aaf9e5afaad4 100644 --- a/drivers/char/hw_random/core.c +++ b/drivers/char/hw_random/core.c @@ -516,11 +516,18 @@ EXPORT_SYMBOL_GPL(hwrng_register); void hwrng_unregister(struct hwrng *rng) { + int err; + mutex_lock(&rng_mutex); list_del(&rng->list); - if (current_rng == rng) - enable_best_rng(); + if (current_rng == rng) { + err = enable_best_rng(); + if (err) { + drop_current_rng(); + cur_rng_set_by_user = 0; + } + } if (list_empty(&rng_list)) { mutex_unlock(&rng_mutex); |