From 60207c8ef2a3a971567dd1207daa234aaa856faa Mon Sep 17 00:00:00 2001
From: Guido Kiener <guido@kiener-muenchen.de>
Date: Tue, 24 Jul 2018 11:05:28 +0200
Subject: usb: usbtmc: Add support for 32 bit compat applications

32 bit applications can only call ioctl functions on 64 bit systems
when the field .compat_ioctl is defined for file operations.

Tested-by: Dave Penkler <dpenkler@gmail.com>
Signed-off-by: Guido Kiener <guido.kiener@rohde-schwarz.com>
Reviewed-by: Steve Bayless <steve_bayless@keysight.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/class/usbtmc.c | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'drivers/usb/class/usbtmc.c')

diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 1b7b2e402adb..83ffa5a14c3d 100644
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -18,6 +18,7 @@
 #include <linux/poll.h>
 #include <linux/mutex.h>
 #include <linux/usb.h>
+#include <linux/compat.h>
 #include <linux/usb/tmc.h>
 
 
@@ -1459,6 +1460,9 @@ static const struct file_operations fops = {
 	.open		= usbtmc_open,
 	.release	= usbtmc_release,
 	.unlocked_ioctl	= usbtmc_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl	= usbtmc_ioctl,
+#endif
 	.fasync         = usbtmc_fasync,
 	.poll           = usbtmc_poll,
 	.llseek		= default_llseek,
-- 
cgit