diff options
Diffstat (limited to 'drivers/usb/dwc3')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 304653fd9223..0481cb7d7142 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2821,7 +2821,7 @@ static irqreturn_t dwc3_process_event_buf(struct dwc3_event_buffer *evt) while (left > 0) { union dwc3_event event; - event.raw = *(u32 *) (evt->buf + evt->lpos); + event.raw = *(u32 *) (evt->cache + evt->lpos); dwc3_process_event_entry(dwc, &event); @@ -2869,6 +2869,7 @@ static irqreturn_t dwc3_thread_interrupt(int irq, void *_evt) static irqreturn_t dwc3_check_event_buf(struct dwc3_event_buffer *evt) { struct dwc3 *dwc = evt->dwc; + u32 amount; u32 count; u32 reg; @@ -2892,6 +2893,12 @@ static irqreturn_t dwc3_check_event_buf(struct dwc3_event_buffer *evt) reg |= DWC3_GEVNTSIZ_INTMASK; dwc3_writel(dwc->regs, DWC3_GEVNTSIZ(0), reg); + amount = min(count, evt->length - evt->lpos); + memcpy(evt->cache + evt->lpos, evt->buf + evt->lpos, amount); + + if (amount < count) + memcpy(evt->cache, evt->buf, count - amount); + return IRQ_WAKE_THREAD; } |