在3288 平台，使用扫码枪扫码时丢失数据问题
- 单独使用扫码枪扫码时正常
- 如果同时接入其他USB 设备，扫码时概率性丢失数据
- 可以按照如下修改测试
— a/drivers/usb/dwc_otg_310/common_port/dwc_list.h
+++ b/drivers/usb/dwc_otg_310/common_port/dwc_list.h
@@ -565,6 +565,18 @@ struct {
(head)->cqh_last = (elm);
} while (0)
+#define DWC_CIRCLEQ_INSERT_COM(head, listelm, elm, field, com) do { \
-
DWC_CIRCLEQ_FOREACH(listelm, head, field) { \ -
if ((elm)->com < (listelm)->com) { \ -
DWC_CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field); \ -
break; \ -
} else \ -
continue; \ -
} \ -
if (DWC_CIRCLEQ_PREV(listelm, field) != elm) \ -
DWC_CIRCLEQ_INSERT_TAIL(head, elm, field); \
+} while (0)
+
#define DWC_CIRCLEQ_REMOVE(head, elm, field) do {
if ((elm)->field.cqe_next == DWC_CIRCLEQ_END(head)) \
— a/drivers/usb/dwc_otg_310/dwc_otg_hcd_intr.c
+++ b/drivers/usb/dwc_otg_310/dwc_otg_hcd_intr.c
@@ -834,6 +834,7 @@ static void release_channel(dwc_otg_hcd_t *hcd,
dwc_otg_transaction_type_e tr_type;
int free_qtd;
int continue_trans = 1;
-
dwc_hc_t *hc_tmp = NULL;
DWC_DEBUGPL(DBG_HCDV, " %s: channel %d, halt_status %d\n",
func, hc->hc_num, halt_status);
@@ -914,7 +915,7 @@ cleanup:- there’s no need to clear the Channel Halted interrupt separately.
*/
dwc_otg_hc_cleanup(hcd->core_if, hc);
- there’s no need to clear the Channel Halted interrupt separately.
- DWC_CIRCLEQ_INSERT_TAIL(&hcd->free_hc_list, hc, hc_list_entry);
-
DWC_CIRCLEQ_INSERT_COM(&hcd->free_hc_list, hc_tmp, hc, hc_list_entry, hc_num);
switch (hc->ep_type) {