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usb: gadget: f_midi: fail if set_alt fails to allocate requests 

This ensures that the midi function will only work if the proper number of
IN and OUT requrests are allocated. Otherwise the function will work with less
requests then what the user wants.

Signed-off-by: Felipe F. Tonello <eu@felipetonello.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
hifive-unleashed-5.1
Felipe F. Tonello 2015-12-01 18:31:01 +00:00 committed by Felipe Balbi
parent 919de443c2
commit f0f1b8cac4
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/gadget/function/f_midi.c
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@ -344,9 +344,10 @@ static int f_midi_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
req->complete = f_midi_complete;
err = usb_ep_queue(midi->out_ep, req, GFP_ATOMIC);
if (err) {
ERROR(midi, "%s queue req: %d\n",
ERROR(midi, "%s: couldn't enqueue request: %d\n",
midi->out_ep->name, err);
free_ep_req(midi->out_ep, req);
return err;
}
}