From: John Youn Date: Tue, 15 Nov 2016 11:08:59 +0000 (+0200) Subject: usb: dwc3: gadget: clear events in top-half handler X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=65aca3205046d159b2c79f7531203a53aec9cf35;p=linux-beck.git usb: dwc3: gadget: clear events in top-half handler 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 Signed-off-by: Felipe Balbi --- diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 0481cb7d7142..3d5ba4106979 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -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; }