diff options
Diffstat (limited to 'drivers/usb/dwc2/hcd_intr.c')
| -rw-r--r-- | drivers/usb/dwc2/hcd_intr.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/hcd_intr.c b/drivers/usb/dwc2/hcd_intr.c index 13e505a6eeda..c4098431ba2f 100644 --- a/drivers/usb/dwc2/hcd_intr.c +++ b/drivers/usb/dwc2/hcd_intr.c @@ -2075,6 +2075,7 @@ static void dwc2_hc_intr(struct dwc2_hsotg *hsotg) { u32 haint; int i; + struct dwc2_host_chan *chan, *chan_tmp; haint = dwc2_readl(hsotg->regs + HAINT); if (dbg_perio()) { @@ -2083,6 +2084,22 @@ static void dwc2_hc_intr(struct dwc2_hsotg *hsotg) dev_vdbg(hsotg->dev, "HAINT=%08x\n", haint); } + /* + * According to USB 2.0 spec section 11.18.8, a host must + * issue complete-split transactions in a microframe for a + * set of full-/low-speed endpoints in the same relative + * order as the start-splits were issued in a microframe for. + */ + list_for_each_entry_safe(chan, chan_tmp, &hsotg->split_order, + split_order_list_entry) { + int hc_num = chan->hc_num; + + if (haint & (1 << hc_num)) { + dwc2_hc_n_intr(hsotg, hc_num); + haint &= ~(1 << hc_num); + } + } + for (i = 0; i < hsotg->core_params->host_channels; i++) { if (haint & (1 << i)) dwc2_hc_n_intr(hsotg, i); |