From: Felipe F. Tonello eu@felipetonello.com
commit f0f1b8cac4d8d973e95f25d9ea132775fb43c5f4 upstream.
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 From: Guenter Roeck linux@roeck-us.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/usb/gadget/function/f_midi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/usb/gadget/function/f_midi.c +++ b/drivers/usb/gadget/function/f_midi.c @@ -364,9 +364,10 @@ static int f_midi_set_alt(struct usb_fun 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; } }