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drivers: serial: nrfx_uarte: fix race condition in uart_rx_disable due to RXTO event #92783

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drivers: serial: nrfx_uarte: fix race condition in uart_rx_disable due to RXTO event #92783

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5 changes: 2 additions & 3 deletions drivers/serial/uart_nrfx_uarte.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1282,19 +1282,18 @@ static int uarte_nrfx_callback_set(const struct device *dev,

static int uarte_nrfx_rx_disable(const struct device *dev)
{
int key = irq_lock();
struct uarte_nrfx_data *data = dev->data;
struct uarte_async_rx *async_rx = &data->async->rx;
NRF_UARTE_Type *uarte = get_uarte_instance(dev);
int key;

if (async_rx->buf == NULL) {
irq_unlock(key);
return -EFAULT;
}

k_timer_stop(&async_rx->timer);

key = irq_lock();

if (async_rx->next_buf != NULL) {
nrf_uarte_shorts_disable(uarte, NRF_UARTE_SHORT_ENDRX_STARTRX);
nrf_uarte_event_clear(uarte, NRF_UARTE_EVENT_RXSTARTED);
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