Commit b8adde8d authored Sep 21, 2011 by Tim Bird Committed by Jason Wessel Mar 22, 2012

kdb: Avoid using dbg_io_ops until it is initialized



This fixes a bug with setting a breakpoint during kdb initialization
(from kdb_cmds).  Any call to kdb_printf() before the initialization
of the kgdboc serial console driver (which happens much later during
bootup than kdb_init), results in kernel panic due to the use of
dbg_io_ops before it is initialized.

Signed-off-by: Tim Bird <tim.bird@am.sony.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>

parent bec4d62e

kernel/debug/kdb/kdb_io.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -689,7 +689,7 @@ kdb_printit:
		if (!dbg_kdb_mode && kgdb_connected) {
		gdbstub_msg_write(kdb_buffer, retlen);
		} else {
		if (!dbg_io_ops->is_console) {
		if (dbg_io_ops && !dbg_io_ops->is_console) {
		len = strlen(kdb_buffer);
		cp = kdb_buffer;
		while (len--) {