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Merge branch 'fix/uhci_rx_fsm_v5.4' into 'release/v5.4'

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fix(uhci): rx fsm race condition (v5.4)

See merge request espressif/esp-idf!50580
This commit is contained in:
morris
2026-07-10 11:23:11 +08:00
parent f77911e82e f681d8976e
commit b3e387f7e3
1 changed files with 3 additions and 2 deletions
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5
components/esp_driver_uart/src/uhci.c
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@@ -164,7 +164,7 @@ static bool uhci_gdma_rx_callback_done(gdma_channel_handle_t dma_chan, gdma_even
gdma_stop(uhci_ctrl->rx_dir.dma_chan);
gdma_reset(uhci_ctrl->rx_dir.dma_chan);
uhci_ctrl->rx_dir.rx_fsm = UHCI_RX_FSM_ENABLE;
atomic_store(&uhci_ctrl->rx_dir.rx_fsm, UHCI_RX_FSM_ENABLE);
}
if (event_data->flags.abnormal_eof) {
@@ -363,10 +363,11 @@ esp_err_t uhci_receive(uhci_controller_handle_t uhci_ctrl, uint8_t *read_buffer,
ESP_RETURN_ON_ERROR(esp_cache_msync(mount_configs[0].buffer, usable_size, ESP_CACHE_MSYNC_FLAG_DIR_M2C), TAG, "cache sync failed");
}
atomic_store(&uhci_ctrl->rx_dir.rx_fsm, UHCI_RX_FSM_RUN);
gdma_reset(uhci_ctrl->rx_dir.dma_chan);
gdma_start(uhci_ctrl->rx_dir.dma_chan, gdma_link_get_head_addr(uhci_ctrl->rx_dir.dma_link));
atomic_store(&uhci_ctrl->rx_dir.rx_fsm, UHCI_RX_FSM_RUN);
return ESP_OK;
}