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authorSumit Garg <sumit.garg@linaro.org>2020-06-04 13:01:17 +0300
committerDaniel Thompson <daniel.thompson@linaro.org>2020-06-25 14:04:29 +0300
commite8857288bb620d594c94a219148d18562e52b06e (patch)
tree2df72cee89b082962593a0805c0329656bf9e351 /kernel/debug/kdb
parent9d71b344f86f4264a5fae43c997a630e93c0de9b (diff)
downloadlinux-e8857288bb620d594c94a219148d18562e52b06e.tar.xz
kdb: Check status of console prior to invoking handlers
Check if a console is enabled prior to invoking corresponding write handler. Suggested-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Signed-off-by: Sumit Garg <sumit.garg@linaro.org> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/1591264879-25920-3-git-send-email-sumit.garg@linaro.org Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Diffstat (limited to 'kernel/debug/kdb')
-rw-r--r--kernel/debug/kdb/kdb_io.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/debug/kdb/kdb_io.c b/kernel/debug/kdb/kdb_io.c
index 2d42a02de40e..58b7d256d0a4 100644
--- a/kernel/debug/kdb/kdb_io.c
+++ b/kernel/debug/kdb/kdb_io.c
@@ -560,6 +560,8 @@ static void kdb_msg_write(const char *msg, int msg_len)
}
for_each_console(c) {
+ if (!(c->flags & CON_ENABLED))
+ continue;
c->write(c, msg, msg_len);
touch_nmi_watchdog();
}