linux-kernel - [PATCH] random: update comment from copy_to_user() -> copy_to

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Message-Id: <20220620090626.700684-1-Jason@zx2c4.com>
Date:   Mon, 20 Jun 2022 11:06:26 +0200
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     linux-kernel@...r.kernel.org
Cc:     "Jason A. Donenfeld" <Jason@...c4.com>
Subject: [PATCH] random: update comment from copy_to_user() -> copy_to_iter()

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@...c4.com>
---
 drivers/char/random.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/char/random.c b/drivers/char/random.c
index 07a022e24057..e3dd1dd3dd22 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -408,7 +408,7 @@ static ssize_t get_random_bytes_user(struct iov_iter *iter)

 	/*
 	 * 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);
-- 
2.35.1