From: Wentao Wang <witallw...@gmail.com>
Echo "" to /sys/module/kgdboc/parameters/kgdboc will fail with "No such device”
error.
This is caused by function "configure_kgdboc" who init err to ENODEV when the
config
is empty (legal input) the code go out with ENODEV returned.
Fixes: 2dd453168643d ("kgdboc: Fix restrict error")
Signed-off-by: Wentao Wang <witallw...@gmail.com>
---
drivers/tty/serial/kgdboc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c
index 6fb312e..bfe5e9e 100644
--- a/drivers/tty/serial/kgdboc.c
+++ b/drivers/tty/serial/kgdboc.c
@@ -148,8 +148,10 @@ static int configure_kgdboc(void)
char *cptr = config;
struct console *cons;
- if (!strlen(config) || isspace(config[0]))
+ if (!strlen(config) || isspace(config[0])) {
+ err = 0;
goto noconfig;
+ }
kgdboc_io_ops.is_console = 0;
kgdb_tty_driver = NULL;
--
2.7.4
_______________________________________________
Kgdb-bugreport mailing list
Kgdb-bugreport@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/kgdb-bugreport
