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drivers: serial: Fix uart_poll_in() for mcux flexcomm driver

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Replaces kUSART_RxFifoFullFlag with kUSART_RxFifoNotEmptyFlag to
prevent Rx FIFO overrun.

Signed-off-by: Jiří Keresteš <jiri@kerestes.cz>
This commit is contained in:
Jiří Keresteš 2020-06-17 10:03:05 +02:00 • committed by Maureen Helm
commit 0126c9f46a
1 changed files with 1 additions and 1 deletions
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2
drivers/serial/uart_mcux_flexcomm.c
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@ -44,7 +44,7 @@ static int mcux_flexcomm_poll_in(struct device *dev, unsigned char *c)
uint32_t flags = USART_GetStatusFlags(config->base);
int ret = -1;
if (flags & kUSART_RxFifoFullFlag) {
if (flags & kUSART_RxFifoNotEmptyFlag) {
*c = USART_ReadByte(config->base);
ret = 0;
}