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usb: gadget: f_mass_storage: reset endpoint driver data when disabled

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Gadgets endpoint driver data is a criteria to judge that
whether the endpoints are in use or not. When gadget gets
assigned an endpoint from endpoint list, they check its
driver data if the driver data is NULL.

If the driver data is not NULL then they regard it as in use.
Therefore all of gadgets should reset their endpoints driver
data to NULL as they are disabled. Otherwise it causes a leak
of endpoint resource.

Signed-off-by: Peter Oh <poh@broadcom.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Peter Oh 2013-09-16 14:21:14 -07:00 committed by Felipe Balbi
parent 660479aad1
commit 7f2ccc8cb2
1 changed files with 2 additions and 0 deletions
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2
drivers/usb/gadget/f_mass_storage.c
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@ -2260,10 +2260,12 @@ static int do_set_interface(struct fsg_common *common, struct fsg_dev *new_fsg)
/* Disable the endpoints */
if (fsg->bulk_in_enabled) {
usb_ep_disable(fsg->bulk_in);
fsg->bulk_in->driver_data = NULL;
fsg->bulk_in_enabled = 0;
}
if (fsg->bulk_out_enabled) {
usb_ep_disable(fsg->bulk_out);
fsg->bulk_out->driver_data = NULL;
fsg->bulk_out_enabled = 0;
}