From ed797074031a37bb9bf4a70952fffc606b77274d Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 26 May 2014 19:23:40 +0200 Subject: [PATCH] USB: cdc-acm: fix shutdown and suspend race We should stop I/O unconditionally at suspend rather than rely on the tty-port initialised flag (which is set prior to stopping I/O during shutdown) in order to prevent suspend returning with URBs still active. Fixes: 11ea859d64b6 ("USB: additional power savings for cdc-acm devices that support remote wakeup") Cc: # v2.6.27 Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 2258827df084..1ac6c5dda9f7 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1550,8 +1550,7 @@ static int acm_suspend(struct usb_interface *intf, pm_message_t message) if (cnt) return 0; - if (test_bit(ASYNCB_INITIALIZED, &acm->port.flags)) - stop_data_traffic(acm); + stop_data_traffic(acm); return 0; } -- 2.20.1