USB: s3c-hsotg: Check for new request before enqueing new setup

Before trying a new setup transaction after getting an EP0 in complete
interrupt, check that the driver did not try and send more EP0 IN data
before enqueing a new setup transaction.

This fixes a bug where we cannot send all of the IN data in one go
so split the transfer, but then fail to send all the data as we start
waiting for a new OUT transaction
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/usb/gadget/s3c-hsotg.c

@@ -1790,7 +1790,7 @@ static void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx,
 		if (dir_in) {
 			s3c_hsotg_complete_in(hsotg, hs_ep);
 
-			if (idx == 0)
+			if (idx == 0 && !hs_ep->req)
 				s3c_hsotg_enqueue_setup(hsotg);
 		} else if (using_dma(hsotg)) {
 			/* We're using DMA, we need to fire an OutDone here