drivers/uart: stm32: Report 9bits transactions as not supported

STM32 uart driver doesn't support 9bits transactions in any case, so remove case were it was declared as supported. Fixes zephyrproject-rtos#31799 Signed-off-by: Erwan Gouriou <[email protected]>
erwango · Feb 11, 2021 · eca6b0f · eca6b0f
1 parent 8872526
commit eca6b0f
Showing 1 changed file with 1 addition and 4 deletions.
diff --git a/drivers/serial/uart_stm32.c b/drivers/serial/uart_stm32.c
@@ -339,10 +339,7 @@ static int uart_stm32_configure(const struct device *dev,
 #ifndef LL_USART_DATAWIDTH_7B
  || (UART_CFG_DATA_BITS_7 == cfg->data_bits)
 #endif /* LL_USART_DATAWIDTH_7B */
-#ifndef LL_USART_DATAWIDTH_9B
- || (UART_CFG_DATA_BITS_9 == cfg->data_bits)
-#endif /* LL_USART_DATAWIDTH_9B */
- ) {
+ || (UART_CFG_DATA_BITS_9 == cfg->data_bits)) {
  return -ENOTSUP;
  }