diff options
| author | Dmitry Safonov <dima@arista.com> | 2019-12-13 03:06:25 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-12-18 17:04:53 +0300 |
| commit | b4088e830bd9f431db655af4b581d495a79709e2 (patch) | |
| tree | 322b46e72d596579d68df08699a8b4c62abc8f64 /drivers/tty/serial/mux.c | |
| parent | 804ca1df0914d409eca2c31b40edcb30f69cce1a (diff) | |
| download | linux-b4088e830bd9f431db655af4b581d495a79709e2.tar.xz | |
tty/serial: Migrate mux to use has_sysrq
The SUPPORT_SYSRQ ifdeffery is not nice as:
- May create misunderstanding about sizeof(struct uart_port) between
different objects
- Prevents moving functions from serial_core.h
- Reduces readability (well, it's ifdeffery - it's hard to follow)
In order to remove SUPPORT_SYSRQ, has_sysrq variable has been added.
Initialise it in driver's probe and remove ifdeffery.
Signed-off-by: Dmitry Safonov <dima@arista.com>
Link: https://lore.kernel.org/r/20191213000657.931618-27-dima@arista.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/mux.c')
| -rw-r--r-- | drivers/tty/serial/mux.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/tty/serial/mux.c b/drivers/tty/serial/mux.c index 00ce31e8d19a..2a9953211a2a 100644 --- a/drivers/tty/serial/mux.c +++ b/drivers/tty/serial/mux.c @@ -25,11 +25,7 @@ #include <asm/irq.h> #include <asm/parisc-device.h> -#if defined(CONFIG_SERIAL_MUX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) #include <linux/sysrq.h> -#define SUPPORT_SYSRQ -#endif - #include <linux/serial_core.h> #define MUX_OFFSET 0x800 @@ -483,6 +479,7 @@ static int __init mux_probe(struct parisc_device *dev) port->ops = &mux_pops; port->flags = UPF_BOOT_AUTOCONF; port->line = port_cnt; + port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_MUX_CONSOLE); /* The port->timeout needs to match what is present in * uart_wait_until_sent in serial_core.c. Otherwise |