Commit ce7d4fe4 authored Aug 01, 2019 by Oliver Neukum Committed by Greg Kroah-Hartman Aug 16, 2019

Input: usbtouchscreen - initialize PM mutex before using it



commit b55d996f057bf2e7ba9422a80b5e17e99860cb0b upstream.

Mutexes shall be initialized before they are used.

Fixes: 12e510db ("Input: usbtouchscreen - fix deadlock in autosuspend")
Reported-by:  <syzbot+199ea16c7f26418b4365@syzkaller.appspotmail.com>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent c9a1c104

drivers/input/touchscreen/usbtouchscreen.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1672,6 +1672,8 @@ static int usbtouch_probe(struct usb_interface *intf,
		if (!usbtouch \|\| !input_dev)
		goto out_free;

		mutex_init(&usbtouch->pm_mutex);

		type = &usbtouch_dev_info[id->driver_info];
		usbtouch->type = type;
		if (!type->process_pkt)