[PATCH 5.4 58/60] random: update comment from copy_to_user() -> copy_to_iter()

Greg Kroah-Hartman
2022-06-27T11:35:01Z

From: Jason A. Donenfeld <Jason@zx2c4.com>

commit 63b8ea5e4f1a87dea4d3114293fc8e96a8f193d7 upstream.

This comment wasn't updated when we moved from read() to read_iter(), so
this patch makes the trivial fix.

Fixes: 1b388e7765f2 ("random: convert to using fops->read_iter()")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/char/random.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -450,7 +450,7 @@ static ssize_t get_random_bytes_user(str

/*
* Immediately overwrite the ChaCha key at index 4 with random
- * bytes, in case userspace causes copy_to_user() below to sleep
+ * bytes, in case userspace causes copy_to_iter() below to sleep
* forever, so that we still retain forward secrecy in that case.
*/
crng_make_state(chacha_state, (u8 *)&chacha_state[4], CHACHA_KEY_SIZE);