diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2015-03-03 16:32:12 (GMT) |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2015-04-14 03:48:12 (GMT) |
| commit | 137f7c590d37279f49caf4d3152a0a7d12f01831 (patch) | |
| tree | e5d8de9bd344ace2fc0b5e15572bf8386821643a /drivers/usb/dwc3/gadget.c | |
| parent | 16bece51c58a7758309918daecdc0c4bb45e271b (diff) | |
| download | u-boot-fsl-qoriq-137f7c590d37279f49caf4d3152a0a7d12f01831.tar.xz | |
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>
Diffstat (limited to 'drivers/usb/dwc3/gadget.c')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 7c342c6..eb31cd9 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); + } } |