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drivers/uart: stm32: fix a bug during transmission

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If a transmission is made with poll_out and immediately after an other
transmission is made with interrupt api the transmission is locked.
We fix this behavior by clearing the tx_poll_stream_on flag during the
irq_tx_enable function

Signed-off-by: Julien D'ascenzio <julien.dascenzio@paratronic.fr>
This commit is contained in:
Julien D'ascenzio 2021-10-26 18:03:31 +02:00 committed by Christopher Friedt
parent ffa0c52552
commit 7b21050f19
1 changed files with 4 additions and 2 deletions
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6
drivers/serial/uart_stm32.c
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@ -594,11 +594,13 @@ static void uart_stm32_irq_tx_enable(const struct device *dev)
{
USART_TypeDef *UartInstance = UART_STRUCT(dev);
LL_USART_EnableIT_TC(UartInstance);
#ifdef CONFIG_PM
struct uart_stm32_data *data = DEV_DATA(dev);
data->tx_poll_stream_on = false;
uart_stm32_pm_constraint_set(dev);
#endif
LL_USART_EnableIT_TC(UartInstance);
}
static void uart_stm32_irq_tx_disable(const struct device *dev)