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authorOliver Neukum <oneukum@suse.com>2019-08-01 19:40:26 +0300
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2019-08-01 20:55:20 +0300
commitb55d996f057bf2e7ba9422a80b5e17e99860cb0b (patch)
treef50fa96dd0577f8fefac7db47ee77f5eeaea1d8b /drivers/input
parente77ff779a0c6666b697c56a6e41972bbf30b977f (diff)
downloadlinux-b55d996f057bf2e7ba9422a80b5e17e99860cb0b.tar.xz
Input: usbtouchscreen - initialize PM mutex before using it
Mutexes shall be initialized before they are used. Fixes: 12e510dbc57b2 ("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>
Diffstat (limited to 'drivers/input')
-rw-r--r--drivers/input/touchscreen/usbtouchscreen.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
index a2cec6cacf57..16d70201de4a 100644
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -1659,6 +1659,8 @@ 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)