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kgdboc,kdb: Allow kdb to work on a non open console port

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If kdb is open on a serial port that is not actually a console make
sure to call the poll routines to emit and receive characters.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Acked-by: Martin Hicks <mort@sgi.com>
This commit is contained in:
Jason Wessel
2010-05-20 21:04:26 -05:00
parent 1cee5e35f1
commit efe2f29e32
3 changed files with 33 additions and 0 deletions
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14
drivers/serial/kgdboc.c
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@ -16,6 +16,7 @@
#include <linux/kgdb.h>
#include <linux/kdb.h>
#include <linux/tty.h>
#include <linux/console.h>
#define MAX_CONFIG_LEN 40
@ -93,12 +94,14 @@ static int configure_kgdboc(void)
int tty_line = 0;
int err;
char *cptr = config;
struct console *cons;
err = kgdboc_option_setup(config);
if (err || !strlen(config) || isspace(config[0]))
goto noconfig;
err = -ENODEV;
kgdboc_io_ops.is_console = 0;
kgdb_tty_driver = NULL;
if (kgdboc_register_kbd(&cptr))
@ -108,6 +111,17 @@ static int configure_kgdboc(void)
if (!p)
goto noconfig;
cons = console_drivers;
while (cons) {
int idx;
if (cons->device && cons->device(cons, &idx) == p &&
idx == tty_line) {
kgdboc_io_ops.is_console = 1;
break;
}
cons = cons->next;
}
kgdb_tty_driver = p;
kgdb_tty_line = tty_line;