From: Marek Szyprowski m.szyprowski@samsung.com
There is no point in calling dwc3_thread_interrupt() if no event is pending. There is also no point in flushing event cache in EVERY loop iteration.
Signed-off-by: Marek Szyprowski m.szyprowski@samsung.com --- drivers/usb/dwc3/core.c | 7 ------- drivers/usb/dwc3/gadget.c | 15 +++++++++++++-- 2 files changed, 13 insertions(+), 9 deletions(-)
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 45bb724..d067ef3 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -766,18 +766,11 @@ void dwc3_uboot_exit(int index) void dwc3_uboot_handle_interrupt(int index) { struct dwc3 *dwc = NULL; - int i; - struct dwc3_event_buffer *evt;
list_for_each_entry(dwc, &dwc3_list, list) { if (dwc->index != index) continue;
- for (i = 0; i < dwc->num_event_buffers; i++) { - evt = dwc->ev_buffs[i]; - dwc3_flush_cache((int)evt->buf, evt->length); - } - dwc3_gadget_uboot_handle_interrupt(dwc); break; } diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 737cb3e..d5dc70c 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2681,6 +2681,17 @@ void dwc3_gadget_exit(struct dwc3 *dwc) */ void dwc3_gadget_uboot_handle_interrupt(struct dwc3 *dwc) { - dwc3_interrupt(0, dwc); - dwc3_thread_interrupt(0, dwc); + int ret = dwc3_interrupt(0, dwc); + + if (ret == IRQ_WAKE_THREAD) { + int i; + struct dwc3_event_buffer *evt; + + for (i = 0; i < dwc->num_event_buffers; i++) { + evt = dwc->ev_buffs[i]; + dwc3_flush_cache((int)evt->buf, evt->length); + } + + dwc3_thread_interrupt(0, dwc); + } }