On Wed, Jan 17, 2007 at 03:56:54PM -0800, Brian Beattie wrote:
> 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.
Thereby preventing the action of <break> (which may be to cause a SAK
event, which would be rather important on a console to ensure that
you're really logging in rather than typing your password into another
users program which just looks like a login program.)
Note that the sequence for sysrq is:
(non-break characters or nothing) <break> <sysrq-char>
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of:
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