I'm trying to do a SYSRQ over a serial console. As I understand it a
break will do that, but I'm not seeing the SYSRQ. In looking at
uart_handle_break() in drivers/serial/8250.c it looks like the code will
toggle port->sysrq, rather than just setting it when the port is a
console. I think the correct code would be to move the "port->sysrq =
0;" to follow the closing brace on the next line, or am I missing
something.
--------------
/*
* We do the SysRQ and SAK checking like this...
*/
static inline int uart_handle_break(struct uart_port *port)
{
struct uart_info *info = port->info;
#ifdef SUPPORT_SYSRQ
if (port->cons && port->cons->index == port->line) {
if (!port->sysrq) {
port->sysrq = jiffies + HZ*5;
return 1;
}
port->sysrq = 0;
}
#endif
if (port->flags & UPF_SAK)
do_SAK(info->tty);
return 0;
}
-------------
It seem to me that this code will toggle port->sysrq.
--
Brian Beattie
Firmware Engineer
APCON, Inc.
[email protected]
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