linux-kernel - [PATCH 47/50] gigaset: add ->compat

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Message-Id: <20180913024049.24567-47-viro@ZenIV.linux.org.uk>
Date:   Thu, 13 Sep 2018 03:40:46 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 47/50] gigaset: add ->compat_ioctl()

From: Al Viro <viro@...iv.linux.org.uk>

... and get rid of COMPAT_IOCTL() for its private ioctls

Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
---
 drivers/isdn/gigaset/interface.c | 11 +++++++++++
 fs/compat_ioctl.c                |  5 -----
 2 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c
index f9698c0c3885..d9a578ac32cd 100644
--- a/drivers/isdn/gigaset/interface.c
+++ b/drivers/isdn/gigaset/interface.c
@@ -233,6 +233,14 @@ static int if_ioctl(struct tty_struct *tty,
 	return retval;
 }
 
+#ifdef CONFIG_COMPAT
+static long if_compat_ioctl(struct tty_struct *tty,
+		    unsigned int cmd, unsigned long arg)
+{
+	return if_ioctl(tty, cmd, (unsigned long)compat_ptr(arg));
+}
+#endif
+
 static int if_tiocmget(struct tty_struct *tty)
 {
 	struct cardstate *cs = tty->driver_data;
@@ -472,6 +480,9 @@ static const struct tty_operations if_ops = {
 	.open =			if_open,
 	.close =		if_close,
 	.ioctl =		if_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl =		if_compat_ioctl,
+#endif
 	.write =		if_write,
 	.write_room =		if_write_room,
 	.chars_in_buffer =	if_chars_in_buffer,
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index ca2b51d9cb61..7eec04b6e757 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -1021,11 +1021,6 @@ COMPATIBLE_IOCTL(CAPI_SET_FLAGS)
 COMPATIBLE_IOCTL(CAPI_CLR_FLAGS)
 COMPATIBLE_IOCTL(CAPI_NCCI_OPENCOUNT)
 COMPATIBLE_IOCTL(CAPI_NCCI_GETUNIT)
-/* Siemens Gigaset */
-COMPATIBLE_IOCTL(GIGASET_REDIR)
-COMPATIBLE_IOCTL(GIGASET_CONFIG)
-COMPATIBLE_IOCTL(GIGASET_BRKCHARS)
-COMPATIBLE_IOCTL(GIGASET_VERSION)
 /* Misc. */
 COMPATIBLE_IOCTL(0x41545900)		/* ATYIO_CLKR */
 COMPATIBLE_IOCTL(0x41545901)		/* ATYIO_CLKW */
-- 
2.11.0