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serial: ucc_uart: Use uart_circ_empty()

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Use uart_circ_empty() rather than open coding it.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20230320135009.47170-1-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ilpo Järvinen 2023-03-20 15:50:08 +02:00 committed by Greg Kroah-Hartman
parent 7553574900
commit b7313f1d65
1 changed files with 2 additions and 3 deletions
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5
drivers/tty/serial/ucc_uart.c
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@ -366,15 +366,14 @@ static int qe_uart_tx_pump(struct uart_qe_port *qe_port)
/* Pick next descriptor and fill from buffer */
bdp = qe_port->tx_cur;
while (!(ioread16be(&bdp->status) & BD_SC_READY) &&
(xmit->tail != xmit->head)) {
while (!(ioread16be(&bdp->status) & BD_SC_READY) && !uart_circ_empty(xmit)) {
count = 0;
p = qe2cpu_addr(be32_to_cpu(bdp->buf), qe_port);
while (count < qe_port->tx_fifosize) {
*p++ = xmit->buf[xmit->tail];
uart_xmit_advance(port, 1);
count++;
if (xmit->head == xmit->tail)
if (uart_circ_empty(xmit))
break;
}