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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2014-12-23 08:40:21 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2014-12-26 00:33:35 +0300 |
| commit | ff77c150f71b761dcf29b9d1947df3165d2dc83e (patch) | |
| tree | c35400d6b0ae1527c41014918ec9fc77e9789261 | |
| parent | ac3a497f13e42a99ed6fe188ebf2dcc39eb7ac20 (diff) | |
| download | linux-ff77c150f71b761dcf29b9d1947df3165d2dc83e.tar.xz | |
hwrng: core - Drop current rng in set_current_rng
Rather than having callers of set_current_rng call drop_current_rng,
we can do it directly in set_current_rng.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | drivers/char/hw_random/core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c index 1d342f0cb0c1..787ef42a77b9 100644 --- a/drivers/char/hw_random/core.c +++ b/drivers/char/hw_random/core.c @@ -70,6 +70,7 @@ module_param(default_quality, ushort, 0644); MODULE_PARM_DESC(default_quality, "default entropy content of hwrng per mill"); +static void drop_current_rng(void); static void start_khwrngd(void); static inline int rng_get_data(struct hwrng *rng, u8 *buffer, size_t size, @@ -105,6 +106,7 @@ static inline void cleanup_rng(struct kref *kref) static void set_current_rng(struct hwrng *rng) { BUG_ON(!mutex_is_locked(&rng_mutex)); + drop_current_rng(); current_rng = rng; } @@ -315,7 +317,6 @@ static ssize_t hwrng_attr_current_store(struct device *dev, err = hwrng_init(rng); if (err) break; - drop_current_rng(); set_current_rng(rng); err = 0; break; |