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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2018-08-03 17:55:12 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-08-03 17:55:12 +0800 |
| commit | c5f5aeef9b55b362ad5a0e04e4b41cd63b208842 (patch) | |
| tree | 0ee2bb561e879db0a990d998359f6516dff3393b /drivers/char/hw_random | |
| parent | a4789089937941959be6c18fa53e1fc0189257fd (diff) | |
| parent | c7513c2a2714204d3588ecaa170ae628fd0d217e (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Merge mainline to pick up c7513c2a2714 ("crypto/arm64: aes-ce-gcm -
add missing kernel_neon_begin/end pair").
Diffstat (limited to 'drivers/char/hw_random')
| -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); |