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random: fix description of get_random_bytes 

After this remark was written, commit d2e7c96af added a use of
arch_get_random_long() inside the get_random_bytes codepath.
The main point stands, but it needs to be reworded.

Signed-off-by: Greg Price <price@mit.edu>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Greg Price 2013-11-29 14:59:45 -05:00 committed by Theodore Ts'o
parent f22052b202
commit 18e9cea749
1 changed files with 3 additions and 2 deletions
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5
drivers/char/random.c
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@ -1170,8 +1170,9 @@ static ssize_t extract_entropy_user(struct entropy_store *r, void __user *buf,
/*
* This function is the exported kernel interface. It returns some
* number of good random numbers, suitable for key generation, seeding
* TCP sequence numbers, etc. It does not use the hw random number
* generator, if available; use get_random_bytes_arch() for that.
* TCP sequence numbers, etc. It does not rely on the hardware random
* number generator. For random bytes direct from the hardware RNG
* (when available), use get_random_bytes_arch().
*/
void get_random_bytes(void *buf, int nbytes)
{