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path: root/drivers/usb/gadget/function/f_midi.c
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Diffstat (limited to 'drivers/usb/gadget/function/f_midi.c')
-rw-r--r--drivers/usb/gadget/function/f_midi.c26
1 files changed, 11 insertions, 15 deletions
diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c
index a287a48..ce3c8a6 100644
--- a/drivers/usb/gadget/function/f_midi.c
+++ b/drivers/usb/gadget/function/f_midi.c
@@ -302,8 +302,7 @@ static int f_midi_start_ep(struct f_midi *midi,
int err;
struct usb_composite_dev *cdev = f->config->cdev;
- if (ep->driver_data)
- usb_ep_disable(ep);
+ usb_ep_disable(ep);
err = config_ep_by_speed(midi->gadget, f, ep);
if (err) {
@@ -341,8 +340,7 @@ static int f_midi_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
if (err)
return err;
- if (midi->out_ep->driver_data)
- usb_ep_disable(midi->out_ep);
+ usb_ep_disable(midi->out_ep);
err = config_ep_by_speed(midi->gadget, f, midi->out_ep);
if (err) {
@@ -547,10 +545,16 @@ static void f_midi_transmit(struct f_midi *midi, struct usb_request *req)
}
}
- if (req->length > 0)
- usb_ep_queue(ep, req, GFP_ATOMIC);
- else
+ if (req->length > 0) {
+ int err;
+
+ err = usb_ep_queue(ep, req, GFP_ATOMIC);
+ if (err < 0)
+ ERROR(midi, "%s queue req: %d\n",
+ midi->in_ep->name, err);
+ } else {
free_ep_req(ep, req);
+ }
}
static void f_midi_in_tasklet(unsigned long data)
@@ -757,12 +761,10 @@ static int f_midi_bind(struct usb_configuration *c, struct usb_function *f)
midi->in_ep = usb_ep_autoconfig(cdev->gadget, &bulk_in_desc);
if (!midi->in_ep)
goto fail;
- midi->in_ep->driver_data = cdev; /* claim */
midi->out_ep = usb_ep_autoconfig(cdev->gadget, &bulk_out_desc);
if (!midi->out_ep)
goto fail;
- midi->out_ep->driver_data = cdev; /* claim */
/* allocate temporary function list */
midi_function = kcalloc((MAX_PORTS * 4) + 9, sizeof(*midi_function),
@@ -889,12 +891,6 @@ fail_f_midi:
fail:
f_midi_unregister_card(midi);
fail_register:
- /* we might as well release our claims on endpoints */
- if (midi->out_ep)
- midi->out_ep->driver_data = NULL;
- if (midi->in_ep)
- midi->in_ep->driver_data = NULL;
-
ERROR(cdev, "%s: can't bind, err %d\n", f->name, status);
return status;
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