Since we are saving the event count and handling the events in the
threaded interrupt handler, we can write and clear out the eventcount in
the hard interrupt handler itself.
This behavior will be required for IP 3.00a cores that need to use
interrupt moderation as a workaround for an RTL issue were the interrupt
line cannot be masked between the hard/soft interrupt handler.
Signed-off-by: John Youn <johny...@synopsys.com>
---
drivers/usb/dwc3/gadget.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 310535e..54ebbd9 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2865,8 +2865,6 @@ static irqreturn_t dwc3_process_event_buf(struct
dwc3_event_buffer *evt)
*/
evt->lpos = (evt->lpos + 4) % DWC3_EVENT_BUFFERS_SIZE;
left -= 4;
-
- dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), 4);
}
evt->count = 0;
@@ -2916,6 +2914,8 @@ static irqreturn_t dwc3_check_event_buf(struct
dwc3_event_buffer *evt)
evt->count = count;
evt->flags |= DWC3_EVENT_PENDING;
+ dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), count);
+
/* Mask interrupt */
reg = dwc3_readl(dwc->regs, DWC3_GEVNTSIZ(0));
reg |= DWC3_GEVNTSIZ_INTMASK;
--
2.10.0
--
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