Commit 29d8c07b authored by Ilpo Järvinen's avatar Ilpo Järvinen Committed by Greg Kroah-Hartman
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serial: stm32: Use uart_xmit_advance() 



Take advantage of the new uart_xmit_advance() helper.

Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20221019091151.6692-35-ilpo.jarvinen@linux.intel.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b92df54c

drivers/tty/serial/stm32-usart.c

+3 −4
Original line number Diff line number Diff line
@@ -596,8 +596,7 @@ static void stm32_usart_transmit_chars_pio(struct uart_port *port) 
		if (!(readl_relaxed(port->membase + ofs->isr) & USART_SR_TXE))

			break;

		writel_relaxed(xmit->buf[xmit->tail], port->membase + ofs->tdr);

		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);

		port->icount.tx++;

		uart_xmit_advance(port, 1);

	}



	/* rely on TXE irq (mask or unmask) for sending remaining data */
@@ -673,8 +672,8 @@ static void stm32_usart_transmit_chars_dma(struct uart_port *port) 


	stm32_usart_set_bits(port, ofs->cr3, USART_CR3_DMAT);



	xmit->tail = (xmit->tail + count) & (UART_XMIT_SIZE - 1);

	port->icount.tx += count;

	uart_xmit_advance(port, count);



	return;



fallback_err: