drivers: serial: Fix uart_poll_in() for mcux flexcomm driver
Replaces kUSART_RxFifoFullFlag with kUSART_RxFifoNotEmptyFlag to prevent Rx FIFO overrun. Signed-off-by: Jiří Keresteš <jiri@kerestes.cz>
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@ -44,7 +44,7 @@ static int mcux_flexcomm_poll_in(struct device *dev, unsigned char *c)
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uint32_t flags = USART_GetStatusFlags(config->base);
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int ret = -1;
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if (flags & kUSART_RxFifoFullFlag) {
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if (flags & kUSART_RxFifoNotEmptyFlag) {
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*c = USART_ReadByte(config->base);
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ret = 0;
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}
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