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authorIlpo Järvinen <ilpo.jarvinen@linux.intel.com>2023-03-20 16:50:09 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-03-29 11:53:57 +0300
commitcd74c5e35546362fdb410551fe650e7e3fa2208e (patch)
tree5dcde3a3a57130a51d680b682c93705609e0c05b /drivers/tty
parentb7313f1d65d668ad0056ca1d93a9017ebb78aeaf (diff)
downloadlinux-cd74c5e35546362fdb410551fe650e7e3fa2208e.tar.xz
serial: cpm_uart: Use uart_circ_empty()
Use uart_circ_empty() instead of open coding it. Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20230320135009.47170-2-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/cpm_uart/cpm_uart_core.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/tty/serial/cpm_uart/cpm_uart_core.c b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
index 5565f302cb21..349e7da643f0 100644
--- a/drivers/tty/serial/cpm_uart/cpm_uart_core.c
+++ b/drivers/tty/serial/cpm_uart/cpm_uart_core.c
@@ -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);