Commit 60207c8e authored Jul 24, 2018 by Guido Kiener Committed by Greg Kroah-Hartman Jul 24, 2018

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>

parent 12dcaeb7

drivers/usb/class/usbtmc.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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,