Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-16 17:12:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

mxser: decrypt FCR values

Browse Source 
Currently, some of the values written to FCR are magic constants. But
they are composed of well-defined bits. Use these named macros in place
of the constants.

No changes in objdump -d.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20210618061516.662-62-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2021-06-18 08:15:07 +02:00 committed by Greg Kroah-Hartman
parent 265ceff7ae
commit aaa28e9f25
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/tty/mxser.c
View File

@ -1580,7 +1580,9 @@ static u8 mxser_receive_chars_old(struct tty_struct *tty,
ch = inb(port->ioaddr + UART_RX);
if (hwid && (status & UART_LSR_OE))
outb(0x23, port->ioaddr + UART_FCR);
outb(UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR |
MOXA_MUST_FCR_GDA_MODE_ENABLE,
port->ioaddr + UART_FCR);
status &= port->read_status_mask;
if (status & port->ignore_status_mask) {
if (++ignored > 100)
@ -1693,7 +1695,9 @@ static bool mxser_port_isr(struct mxser_port *port)
tty = tty_port_tty_get(&port->port);
if (!tty || port->closing || !tty_port_initialized(&port->port)) {
status = inb(port->ioaddr + UART_LSR);
outb(0x27, port->ioaddr + UART_FCR);
outb(MOXA_MUST_FCR_GDA_MODE_ENABLE | UART_FCR_ENABLE_FIFO |
UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT,
port->ioaddr + UART_FCR);
inb(port->ioaddr + UART_MSR);
error = true;