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| author |   Tobin C. Harding <me@tobin.cc> | 2018-06-22 09:15:32 +1000 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2018-07-17 21:32:48 -0400 |
| commit | 753d433b586d1d43c487e3d660f5778c7c8d58ea (patch) | |
| tree | 7f1a030f66811359e8c12c7e4d3668564d919684 /include/linux/random.h | |
| parent | random: Fix whitespace pre random-bytes work (diff) | |
| download | wireguard-linux-753d433b586d1d43c487e3d660f5778c7c8d58ea.tar.xz wireguard-linux-753d433b586d1d43c487e3d660f5778c7c8d58ea.zip | |
random: Return nbytes filled from hw RNG
Currently the function get_random_bytes_arch() has return value 'void'.
If the hw RNG fails we currently fall back to using get_random_bytes().
This defeats the purpose of requesting random material from the hw RNG
in the first place.
There are currently no intree users of get_random_bytes_arch().
Only get random bytes from the hw RNG, make function return the number
of bytes retrieved from the hw RNG.
Acked-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'include/linux/random.h')
| -rw-r--r-- | include/linux/random.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/random.h b/include/linux/random.h index 2ddf13b4281e..f1c9bc5cd231 100644 --- a/include/linux/random.h +++ b/include/linux/random.h @@ -38,7 +38,7 @@ extern void get_random_bytes(void *buf, int nbytes); extern int wait_for_random_bytes(void); extern int add_random_ready_callback(struct random_ready_callback *rdy); extern void del_random_ready_callback(struct random_ready_callback *rdy); -extern void get_random_bytes_arch(void *buf, int nbytes); +extern int __must_check get_random_bytes_arch(void *buf, int nbytes); #ifndef MODULE extern const struct file_operations random_fops, urandom_fops; |