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path: root/drivers/usb/musb/musb_gadget_ep0.c
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Diffstat (limited to 'drivers/usb/musb/musb_gadget_ep0.c')
-rw-r--r--drivers/usb/musb/musb_gadget_ep0.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c
index 8fba3f11e47..53d06451f82 100644
--- a/drivers/usb/musb/musb_gadget_ep0.c
+++ b/drivers/usb/musb/musb_gadget_ep0.c
@@ -664,7 +664,7 @@ irqreturn_t musb_g_ep0_irq(struct musb *musb)
musb->ep0_state = MUSB_EP0_STAGE_STATUSIN;
break;
default:
- ERR("SetupEnd came in a wrong ep0stage %s",
+ ERR("SetupEnd came in a wrong ep0stage %s\n",
decode_ep0stage(musb->ep0_state));
}
csr = musb_readw(regs, MUSB_CSR0);
@@ -787,12 +787,18 @@ setup:
handled = service_zero_data_request(
musb, &setup);
+ /*
+ * We're expecting no data in any case, so
+ * always set the DATAEND bit -- doing this
+ * here helps avoid SetupEnd interrupt coming
+ * in the idle stage when we're stalling...
+ */
+ musb->ackpend |= MUSB_CSR0_P_DATAEND;
+
/* status stage might be immediate */
- if (handled > 0) {
- musb->ackpend |= MUSB_CSR0_P_DATAEND;
+ if (handled > 0)
musb->ep0_state =
MUSB_EP0_STAGE_STATUSIN;
- }
break;
/* sequence #1 (IN to host), includes GET_STATUS