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usb: dwc3: gadget: clear events in top-half handler

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Now that all the infrastructure is in place, we can
clear events in the top-half handler in order to
bring IRQ line low ASAP.

This is also a necessary step in order to implement
workaround for known erratum in follow-up patches.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
John Youn 2016-11-15 13:08:59 +02:00 committed by Felipe Balbi
parent ebbb2d5939
commit 65aca32050
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/dwc3/gadget.c
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@ -2836,8 +2836,6 @@ static irqreturn_t dwc3_process_event_buf(struct dwc3_event_buffer *evt)
*/
evt->lpos = (evt->lpos + 4) % evt->length;
left -= 4;
dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), 4);
}
evt->count = 0;
@ -2899,6 +2897,8 @@ static irqreturn_t dwc3_check_event_buf(struct dwc3_event_buffer *evt)
if (amount < count)
memcpy(evt->cache, evt->buf, count - amount);
dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), count);
return IRQ_WAKE_THREAD;
}