dcd/dwc2: fix ISO IN endpoint become disabled after incomplete transfer

HiFiPhile · HiFiPhile · commit 1f662779c44d · 2026-05-12T19:57:09.000+02:00
Signed-off-by: HiFiPhile &lt;admin@hifiphile.com&gt;
diff --git a/src/portable/synopsys/dwc2/dcd_dwc2.c b/src/portable/synopsys/dwc2/dcd_dwc2.c
@@ -1136,8 +1136,9 @@ static void handle_incomplete_iso_in(uint8_t rhport) {
         }
         epin->diepctl = depctl.value;
       } else {
-        // too many retries, give up
+        // too many retries, give up, but keep endpoint activated
         edpt_disable(rhport, epnum | TUSB_DIR_IN_MASK, false);
+        epin->diepctl |= DIEPCTL_USBAEP;
         dcd_event_xfer_complete(rhport, epnum | TUSB_DIR_IN_MASK, 0, XFER_RESULT_FAILED, true);
       }
     }

Original file line number	Diff line number	Diff line change
`@@ -1136,8 +1136,9 @@ static void handle_incomplete_iso_in(uint8_t rhport) {`
`1136`	`1136`	`}`
`1137`	`1137`	`epin->diepctl = depctl.value;`
`1138`	`1138`	`} else {`
`1139`		`- // too many retries, give up`
	`1139`	`+ // too many retries, give up, but keep endpoint activated`
`1140`	`1140`	`edpt_disable(rhport, epnum \| TUSB_DIR_IN_MASK, false);`
	`1141`	`+ epin->diepctl \|= DIEPCTL_USBAEP;`
`1141`	`1142`	`dcd_event_xfer_complete(rhport, epnum \| TUSB_DIR_IN_MASK, 0, XFER_RESULT_FAILED, true);`
`1142`	`1143`	`}`
`1143`	`1144`	`}`