diff options
Diffstat (limited to 'drivers/usb/gadget/file_storage.c')
| -rw-r--r-- | drivers/usb/gadget/file_storage.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c index 66105ce49672..8b0a13202573 100644 --- a/drivers/usb/gadget/file_storage.c +++ b/drivers/usb/gadget/file_storage.c @@ -728,6 +728,7 @@ struct fsg_dev { #include "fsl_updater.h" #endif +static int do_set_interface(struct fsg_dev *fsg, int altsetting); typedef void (*fsg_routine_t)(struct fsg_dev *); static int exception_in_progress(struct fsg_dev *fsg) @@ -1108,6 +1109,14 @@ static void fsg_disconnect(struct usb_gadget *gadget) struct fsg_dev *fsg = get_gadget_data(gadget); DBG(fsg, "disconnect or port reset\n"); + /* + * The disconnect exception will call do_set_config, and therefore will + * visit controller registers. However it is a delayed event, and will be + * handled at another process, so the controller maybe have already close the + * usb clock.*/ + if (fsg->new_config) + do_set_interface(fsg, -1);/* disable the interface */ + raise_exception(fsg, FSG_STATE_DISCONNECT); } |