diff options
| author | Jiri Slaby <jslaby@suse.cz> | 2021-06-18 08:15:07 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-18 13:10:02 +0200 |
| commit | aaa28e9f250ca0a63b69b7125a10d49e1c264f85 (patch) | |
| tree | e1030a8a9088bcf3e6fa3926293e13219abf47f0 /drivers/tty/mxser.c | |
| parent | 265ceff7aeaa1001b4bea810e1b832d138352b3f (diff) | |
mxser: decrypt FCR values
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>
Diffstat (limited to 'drivers/tty/mxser.c')
| -rw-r--r-- | drivers/tty/mxser.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index 1a8698e58b1c..c8ba062d8824 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -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; |