by setting IOC always, we can recycle TRBs a
lot sooner at the expense of some increased
CPU load.
The extra load seems to be quite minimal on
OMAP5 devices (instead of 1 IRQ for one MSC
transfer, we get
CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS).
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
drivers/usb/dwc3/gadget.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 5401b2b..b3855be 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -771,9 +771,6 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS_FIRST;
else
trb->ctrl = DWC3_TRBCTL_ISOCHRONOUS;
-
- if (!req->request.no_interrupt && !chain)
- trb->ctrl |= DWC3_TRB_CTRL_IOC;
break;
case USB_ENDPOINT_XFER_BULK:
@@ -788,6 +785,9 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
BUG();
}
+ if (!req->request.no_interrupt && !chain)
+ trb->ctrl |= DWC3_TRB_CTRL_IOC;
+
if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
trb->ctrl |= DWC3_TRB_CTRL_ISP_IMI;
trb->ctrl |= DWC3_TRB_CTRL_CSP;
@@ -1858,9 +1858,6 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep,
return 1;
}
- if ((event->status & DEPEVT_STATUS_IOC) &&
- (trb->ctrl & DWC3_TRB_CTRL_IOC))
- return 0;
return 1;
}
--
1.8.4.GIT
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