linux-kernel - [PATCH 03/11] random: fix description of get_random

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Message-ID: <20131107235834.GF16018@ringworld.MIT.EDU>
Date:	Thu, 7 Nov 2013 18:58:35 -0500
From:	Greg Price <price@....EDU>
To:	"Theodore Ts'o" <tytso@....edu>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 03/11] 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.

Cc: "Theodore Ts'o" <tytso@....edu>
Signed-off-by: Greg Price <price@....edu>
---
 drivers/char/random.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/char/random.c b/drivers/char/random.c
index a89ba74..d1466c9 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1048,8 +1048,9 @@ 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)
 {
-- 
1.8.3.2

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