Commit cd74c5e3 authored by Ilpo Järvinen's avatar Ilpo Järvinen Committed by Greg Kroah-Hartman
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serial: cpm_uart: Use uart_circ_empty() 



Use uart_circ_empty() instead of open coding it.

Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20230320135009.47170-2-ilpo.jarvinen@linux.intel.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b7313f1d

drivers/tty/serial/cpm_uart/cpm_uart_core.c

+2 −3
Original line number Diff line number Diff line
@@ -678,15 +678,14 @@ static int cpm_uart_tx_pump(struct uart_port *port) 
	/* Pick next descriptor and fill from buffer */

	bdp = pinfo->tx_cur;



	while (!(in_be16(&bdp->cbd_sc) & BD_SC_READY) &&

	       xmit->tail != xmit->head) {

	while (!(in_be16(&bdp->cbd_sc) & BD_SC_READY) && !uart_circ_empty(xmit)) {

		count = 0;

		p = cpm2cpu_addr(in_be32(&bdp->cbd_bufaddr), pinfo);

		while (count < pinfo->tx_fifosize) {

			*p++ = xmit->buf[xmit->tail];

			uart_xmit_advance(port, 1);

			count++;

			if (xmit->head == xmit->tail)

			if (uart_circ_empty(xmit))

				break;

		}

		out_be16(&bdp->cbd_datlen, count);