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portable/dwc2: rewind DMA on ISO IN retry

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Zixun LI
2026-07-28 21:15:38 +02:00
parent a240ee5be9
commit a20cf74e6a
1 changed files with 6 additions and 1 deletions
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7
src/portable/synopsys/dwc2/dcd_dwc2.c
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@ -1143,7 +1143,12 @@ static void handle_incomplete_iso_in(uint8_t rhport) {
xfer_ctl_t *xfer = XFER_CTL_BASE(epnum, TUSB_DIR_IN);
if (xfer->iso_retry > 0) {
xfer->iso_retry--;
// Restart ISO transfe: re-write TSIZ and CTL
// Restart ISO transfer: re-write DMA address, TSIZ, and CTL
#if CFG_TUD_DWC2_DMA_ENABLE
if (dma_device_enabled(dwc2)) {
epin->diepdma = (uintptr_t) xfer->buffer;
}
#endif
dwc2_ep_tsize_t deptsiz = {.value = 0};
deptsiz.xfer_size = xfer->total_len;
deptsiz.packet_count = tu_div_ceil(xfer->total_len, xfer->max_size);