[PATCH 2/2] printk: Debug patch 2

[Jan Kara]

Signed-off-by: Jan Kara <jack@xxxxxxx>
---
 kernel/printk/printk.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index da94dc18b6fa..7263c4353150 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -1638,17 +1638,19 @@ asmlinkage int vprintk_emit(int facility, int level,
 	logbuf_cpu = UINT_MAX;
 	raw_spin_unlock(&logbuf_lock);
 	lockdep_on();
-	local_irq_restore(flags);
-
-	/* If called from the scheduler, we can not call up(). */
-	if (in_sched)
-		return printed_len;
-
 	/*
 	 * Disable preemption to avoid being preempted while holding
 	 * console_sem which would prevent anyone from printing to console
 	 */
 	preempt_disable();
+	local_irq_restore(flags);
+
+	/* If called from the scheduler, we can not call up(). */
+	if (in_sched) {
+		preempt_enable();
+		return printed_len;
+	}
+
 	lockdep_off();
 	/*
 	 * Try to acquire and then immediately release the console semaphore.
-- 
1.8.1.4


--ZJcv+A0YCCLh2VIg--
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/