power: console flush during suspend

If the console lock is taken by non boot cpus, then during
suspend conosole buffer may not flush because all nonboot
cpus will be disabled. So,if no_console_suspend is passed
in kernel commandline, flush console before disabling
nonboot cpus.

Bug 200143487

Change-Id: I1a4455a1f515694a75ff7a96d08f24bf4777bf5c
Signed-off-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-on: http://git-master/r/922363
(cherry picked from commit 1f17d55e442d5768a7e37183bf835c20132c3617)
Reviewed-on: http://git-master/r/924111
GVS: Gerrit_Virtual_Submit
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>

diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index 6d4f0a3f658c8dd587f555dcb87f1ffce2659ec1..9c69f75cae68179457756e33f6a759f3cdadce60 100644 (file)
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -213,6 +213,11 @@ static int suspend_enter(suspend_state_t state, bool *wakeup)
                goto Platform_wake;
        }
 
+       /* flush console buffer if console_suspend_enabled cleared */
+       if (!console_suspend_enabled) {
+               console_lock();
+               console_unlock();
+       }
        ftrace_stop();
        error = disable_nonboot_cpus();
        if (error || suspend_test(TEST_CPUS)) {