diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2015-03-03 17:32:12 +0100 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2015-04-14 05:48:12 +0200 |
| commit | 137f7c590d37279f49caf4d3152a0a7d12f01831 (patch) | |
| tree | e5d8de9bd344ace2fc0b5e15572bf8386821643a | |
| parent | 16bece51c58a7758309918daecdc0c4bb45e271b (diff) | |
usb: dwc3: optimize interrupt loop
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>
| -rw-r--r-- | drivers/usb/dwc3/core.c | 7 | ||||
| -rw-r--r-- | 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 33d2cf2f112..ab3c94e5127 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -769,18 +769,11 @@ 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 7c342c63ec6..eb31cd93d62 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2683,6 +2683,17 @@ 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); + } } |