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mxser: introduce mxser_16550A_or_MUST helper

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This check is used in the code on many places. Either in positive or
negative form. So introduce a helper called mxser_16550A_or_MUST for
this purpose. And replace all the occurrences.

This simplifies many ifs in there.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210618061516.662-67-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2021-06-18 08:15:12 +02:00 committed by Greg Kroah-Hartman
parent 06cc52ef82
commit 5d1ea1ad28
1 changed files with 13 additions and 13 deletions
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26
drivers/tty/mxser.c
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@ -398,6 +398,11 @@ static enum mxser_must_hwid mxser_must_get_hwid(unsigned long io)
return MOXA_OTHER_UART;
}
static bool mxser_16550A_or_MUST(struct mxser_port *info)
{
return info->type == PORT_16550A || info->board->must_hwid;
}
static void mxser_process_txrx_fifo(struct mxser_port *info)
{
unsigned int i;
@ -537,8 +542,7 @@ static void mxser_handle_cts(struct tty_struct *tty, struct mxser_port *info,
if (cts) {
tty->hw_stopped = 0;
if (info->type != PORT_16550A &&
!info->board->must_hwid)
if (!mxser_16550A_or_MUST(info))
__mxser_start_tx(info);
tty_wakeup(tty);
}
@ -547,7 +551,7 @@ static void mxser_handle_cts(struct tty_struct *tty, struct mxser_port *info,
return;
tty->hw_stopped = 1;
if (info->type != PORT_16550A && !info->board->must_hwid)
if (!mxser_16550A_or_MUST(info))
__mxser_stop_tx(info);
}
@ -626,7 +630,7 @@ static void mxser_change_speed(struct tty_struct *tty)
tty_port_set_cts_flow(&info->port, cflag & CRTSCTS);
if (cflag & CRTSCTS) {
info->IER |= UART_IER_MSI;
if ((info->type == PORT_16550A) || (info->board->must_hwid)) {
if (mxser_16550A_or_MUST(info)) {
info->MCR |= UART_MCR_AFE;
} else {
mxser_handle_cts(tty, info,
@ -962,11 +966,10 @@ static int mxser_write(struct tty_struct *tty, const unsigned char *buf, int cou
total += c;
}
if (info->xmit_cnt && !tty->flow.stopped) {
if (!tty->hw_stopped || info->type == PORT_16550A ||
info->board->must_hwid)
if (info->xmit_cnt && !tty->flow.stopped)
if (!tty->hw_stopped || mxser_16550A_or_MUST(info))
mxser_start_tx(info);
}
return total;
}
@ -996,8 +999,7 @@ static void mxser_flush_chars(struct tty_struct *tty)
struct mxser_port *info = tty->driver_data;
if (!info->xmit_cnt || tty->flow.stopped || !info->port.xmit_buf ||
(tty->hw_stopped && info->type != PORT_16550A &&
!info->board->must_hwid))
(tty->hw_stopped && !mxser_16550A_or_MUST(info)))
return;
mxser_start_tx(info);
@ -1655,9 +1657,7 @@ static void mxser_transmit_chars(struct tty_struct *tty, struct mxser_port *port
return;
if (!port->xmit_cnt || tty->flow.stopped ||
(tty->hw_stopped &&
(port->type != PORT_16550A) &&
(!port->board->must_hwid))) {
(tty->hw_stopped && !mxser_16550A_or_MUST(port))) {
__mxser_stop_tx(port);
return;
}