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>

diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index df6a39d6270f0ba6b4ad304af725c43d8a402d81..10aeee145eeababa6500be2bf36ddd0eea5978e3 100644 (file)
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/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