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mxser: drop mxser_port::baud_base 

It's an once-set constant, so define a macro for the constant
(MXSER_BAUD_BASE) and use it in the code instead.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210618061516.662-36-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2021-06-18 08:14:41 +02:00 committed by Greg Kroah-Hartman
parent 01c3de9a10
commit a6970c39c3
1 changed files with 11 additions and 14 deletions
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25
drivers/tty/mxser.c
View File

@ -156,6 +156,8 @@
#define WAKEUP_CHARS 256
#define MXSER_BAUD_BASE 921600
#define PCI_DEVICE_ID_POS104UL 0x1044
#define PCI_DEVICE_ID_CB108 0x1080
#define PCI_DEVICE_ID_CP102UF 0x1023
@ -274,7 +276,6 @@ struct mxser_port {
u8 rx_high_water;
u8 rx_low_water;
int baud_base; /* max. speed */
int type; /* UART type */
unsigned char x_char; /* xon/xoff character */
@ -584,13 +585,13 @@ static int mxser_set_baud(struct tty_struct *tty, speed_t newspd)
return -1;
if (newspd == 134) {
quot = 2 * info->baud_base / 269;
quot = 2 * MXSER_BAUD_BASE / 269;
tty_encode_baud_rate(tty, 134, 134);
} else if (newspd) {
quot = info->baud_base / newspd;
quot = MXSER_BAUD_BASE / newspd;
if (quot == 0)
quot = 1;
baud = info->baud_base/quot;
baud = MXSER_BAUD_BASE / quot;
tty_encode_baud_rate(tty, baud, baud);
} else {
quot = 0;
@ -601,7 +602,7 @@ static int mxser_set_baud(struct tty_struct *tty, speed_t newspd)
* u64 domain
*/
timeout = (u64)info->xmit_fifo_size * HZ * 10 * quot;
do_div(timeout, info->baud_base);
do_div(timeout, MXSER_BAUD_BASE);
info->timeout = timeout + HZ / 50; /* Add .02 seconds of slop */
if (quot) {
@ -623,7 +624,7 @@ static int mxser_set_baud(struct tty_struct *tty, speed_t newspd)
#ifdef BOTHER
if (C_BAUD(tty) == BOTHER) {
quot = info->baud_base % newspd;
quot = MXSER_BAUD_BASE % newspd;
quot *= 8;
if (quot % newspd > newspd / 2) {
quot /= newspd;
@ -1222,7 +1223,7 @@ static int mxser_get_serial_info(struct tty_struct *tty,
ss->port = info->ioaddr,
ss->irq = info->board->irq,
ss->flags = info->port.flags,
ss->baud_base = info->baud_base,
ss->baud_base = MXSER_BAUD_BASE,
ss->close_delay = close_delay;
ss->closing_wait = closing_wait;
ss->custom_divisor = info->custom_divisor,
@ -1263,7 +1264,7 @@ static int mxser_set_serial_info(struct tty_struct *tty,
closing_wait = msecs_to_jiffies(closing_wait * 10);
if (!capable(CAP_SYS_ADMIN)) {
if ((ss->baud_base != info->baud_base) ||
if ((ss->baud_base != MXSER_BAUD_BASE) ||
(close_delay != info->port.close_delay) ||
(closing_wait != info->port.closing_wait) ||
((ss->flags & ~ASYNC_USR_MASK) != (info->port.flags & ~ASYNC_USR_MASK))) {
@ -1282,7 +1283,7 @@ static int mxser_set_serial_info(struct tty_struct *tty,
port->close_delay = close_delay;
port->closing_wait = closing_wait;
if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST &&
(ss->baud_base != info->baud_base ||
(ss->baud_base != MXSER_BAUD_BASE ||
ss->custom_divisor !=
info->custom_divisor)) {
if (ss->custom_divisor == 0) {
@ -2018,7 +2019,7 @@ static int mxser_initbrd(struct mxser_board *brd)
process_txrx_fifo(info);
info->custom_divisor = info->baud_base * 16;
info->custom_divisor = MXSER_BAUD_BASE * 16;
info->port.close_delay = 5 * HZ / 10;
info->port.closing_wait = 30 * HZ;
spin_lock_init(&info->slock);
@ -2127,10 +2128,6 @@ static int mxser_probe(struct pci_dev *pdev,
outb(0, ioaddress + 0x0c); /* default set to RS232 mode */
}
for (i = 0; i < brd->info->nports; i++) {
brd->ports[i].baud_base = 921600;
}
/* mxser_initbrd will hook ISR. */
retval = mxser_initbrd(brd);
if (retval)