linux-kernel - [PATCH] tty: n_gsm: Add compat

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Message-Id: <20170815115827.7070-1-poeschel@lemonage.de>
Date:   Tue, 15 Aug 2017 13:58:27 +0200
From:   Lars Poeschel <poeschel@...onage.de>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>, linux-kernel@...r.kernel.org
Cc:     Lars Poeschel <poeschel@...onage.de>
Subject: [PATCH] tty: n_gsm: Add compat_ioctl

To use this driver with 32 bit userspace applications on 64 bit
kernels a compat_ioctl is needed.

Signed-off-by: Lars Poeschel <poeschel@...onage.de>
---
 drivers/tty/n_gsm.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 2afe5fce68e3..0a3c9665e015 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -2607,6 +2607,14 @@ static int gsmld_ioctl(struct tty_struct *tty, struct file *file,
 	}
 }
 
+#ifdef CONFIG_COMPAT
+static long gsmld_compat_ioctl(struct tty_struct *tty, struct file *file,
+		       unsigned int cmd, unsigned long arg)
+{
+	return gsmld_ioctl(tty, file, cmd, arg);
+}
+#endif
+
 /*
  *	Network interface
  *
@@ -2818,6 +2826,9 @@ static struct tty_ldisc_ops tty_ldisc_packet = {
 	.flush_buffer    = gsmld_flush_buffer,
 	.read            = gsmld_read,
 	.write           = gsmld_write,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl    = gsmld_compat_ioctl,
+#endif
 	.ioctl           = gsmld_ioctl,
 	.poll            = gsmld_poll,
 	.receive_buf     = gsmld_receive_buf,
-- 
2.13.2