diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/portable/synopsys/dwc2/hcd_dwc2.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/portable/synopsys/dwc2/hcd_dwc2.c b/src/portable/synopsys/dwc2/hcd_dwc2.c index 45add6c7f..9f6fc1469 100644 --- a/src/portable/synopsys/dwc2/hcd_dwc2.c +++ b/src/portable/synopsys/dwc2/hcd_dwc2.c @@ -1389,7 +1389,10 @@ static void handle_channel_irq(uint8_t rhport, bool in_isr) { dwc2_channel_char_t hcchar = {.value = channel->hcchar}; const uint32_t hcint = channel->hcint; - channel->hcint = hcint; // clear interrupt + // Slave handlers process one cause per pass. If ChHltd arrived with + // another cause, leave it pending so the next pass retires the halt. + const uint32_t hcint_clear = (!is_dma && (hcint & ~HCINT_HALTED)) ? (hcint & ~HCINT_HALTED) : hcint; + channel->hcint = hcint_clear; bool is_done = false; if (is_dma) { |