From ac90e36592ea5171c4e70f58b39a782d871a7d9f Mon Sep 17 00:00:00 2001 From: David Brownell Date: Tue, 1 Jul 2008 13:18:20 -0700 Subject: [PATCH] usb_gadget: composite cdc gadget fault handling These two fixes ensure the new "CDC Composite Device" gadget fails cleanly when it's loaded on hardware that can't support this particular gadget driver. Signed-off-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/cdc2.c | 2 +- drivers/usb/gadget/u_serial.c | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/usb/gadget/cdc2.c b/drivers/usb/gadget/cdc2.c index 289c752771..d490d02895 100644 --- a/drivers/usb/gadget/cdc2.c +++ b/drivers/usb/gadget/cdc2.c @@ -124,7 +124,7 @@ static int __init cdc_do_config(struct usb_configuration *c) return status; status = acm_bind_config(c, 0); - if (status == 0) + if (status < 0) return status; return 0; diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c index 88d4f5452c..abf9505d3a 100644 --- a/drivers/usb/gadget/u_serial.c +++ b/drivers/usb/gadget/u_serial.c @@ -1090,6 +1090,9 @@ void gserial_cleanup(void) unsigned i; struct gs_port *port; + if (!gs_tty_driver) + return; + /* start sysfs and /dev/ttyGS* node removal */ for (i = 0; i < n_ports; i++) tty_unregister_device(gs_tty_driver, i); -- 2.39.5