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Merge pull request #1279 from kasjer/kasjer/nrf5x-int-race

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nrf5x: Fix EP OUT race conditions
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Ha Thach 2022-01-19 10:33:37 +07:00 committed by GitHub
commit 983abfd6d8
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1 changed files with 3 additions and 1 deletions
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4
src/portable/nordic/nrf5x/dcd_nrf5x.c
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@ -457,9 +457,11 @@ bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t
xfer_td_t* xfer = get_td(epnum, dir);
dcd_int_disable(rhport);
xfer->buffer = buffer;
xfer->total_len = total_bytes;
xfer->actual_len = 0;
dcd_int_enable(rhport);
// Control endpoint with zero-length packet and opposite direction to 1st request byte --> status stage
bool const control_status = (epnum == 0 && total_bytes == 0 && dir != tu_edpt_dir(NRF_USBD->BMREQUESTTYPE));
@ -480,7 +482,7 @@ bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t
edpt_dma_start(&NRF_USBD->TASKS_EP0RCVOUT);
}else
{
if ( xfer->data_received )
if ( xfer->data_received && xfer->total_len > xfer->actual_len)
{
// Data is already received previously
// start DMA to copy to SRAM