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

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>

1 files changed, 16 insertions, 0 deletions

diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c
index 8339b291e8bc..58be7e9c9e95 100644
--- a/kernel/debug/kdb/kdb_io.c
+++ b/kernel/debug/kdb/kdb_io.c
@@ -673,6 +673,14 @@ kdb_printit:
         if (!dbg_kdb_mode && kgdb_connected) {
                 gdbstub_msg_write(kdb_buffer, retlen);
         } else {
+                if (!dbg_io_ops->is_console) {
+                        len = strlen(kdb_buffer);
+                        cp = kdb_buffer;
+                        while (len--) {
+                                dbg_io_ops->write_char(*cp);
+                                cp++;
+                        }
+                }
                 while (c) {
                         c->write(c, kdb_buffer, retlen);
                         touch_nmi_watchdog();
@@ -719,6 +727,14 @@ kdb_printit:
                 kdb_input_flush();
                 c = console_drivers;
 
+                if (!dbg_io_ops->is_console) {
+                        len = strlen(moreprompt);
+                        cp = moreprompt;
+                        while (len--) {
+                                dbg_io_ops->write_char(*cp);
+                                cp++;
+                        }
+                }
                 while (c) {
                         c->write(c, moreprompt, strlen(moreprompt));
                         touch_nmi_watchdog();