linux-kernel - [PATCH 5.4 007/240] compat_ioctl: remove /dev/random commands

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Date:   Mon, 20 Jun 2022 14:48:28 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
        "Jason A. Donenfeld" <Jason@...c4.com>
Subject: [PATCH 5.4 007/240] compat_ioctl: remove /dev/random commands

From: Arnd Bergmann <arnd@...db.de>

commit 507e4e2b430b6a27b66f4745564ecaee7967737f upstream.

These are all handled by the random driver, so instead of listing
each ioctl, we can use the generic compat_ptr_ioctl() helper.

Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/char/random.c |    1 +
 fs/compat_ioctl.c     |    7 -------
 2 files changed, 1 insertion(+), 7 deletions(-)

--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -2190,6 +2190,7 @@ const struct file_operations random_fops
 	.write = random_write,
 	.poll  = random_poll,
 	.unlocked_ioctl = random_ioctl,
+	.compat_ioctl = compat_ptr_ioctl,
 	.fasync = random_fasync,
 	.llseek = noop_llseek,
 };
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -808,13 +808,6 @@ COMPATIBLE_IOCTL(WDIOC_SETTIMEOUT)
 COMPATIBLE_IOCTL(WDIOC_GETTIMEOUT)
 COMPATIBLE_IOCTL(WDIOC_SETPRETIMEOUT)
 COMPATIBLE_IOCTL(WDIOC_GETPRETIMEOUT)
-/* Big R */
-COMPATIBLE_IOCTL(RNDGETENTCNT)
-COMPATIBLE_IOCTL(RNDADDTOENTCNT)
-COMPATIBLE_IOCTL(RNDGETPOOL)
-COMPATIBLE_IOCTL(RNDADDENTROPY)
-COMPATIBLE_IOCTL(RNDZAPENTCNT)
-COMPATIBLE_IOCTL(RNDCLEARPOOL)
 /* Bluetooth */
 COMPATIBLE_IOCTL(HCIDEVUP)
 COMPATIBLE_IOCTL(HCIDEVDOWN)