From: Peter Zijlstra <peterz@infradead.org>
To: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Ingo Molnar <mingo@elte.hu>, tglx <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
linux-serial@vger.kernel.org
Subject: serial8250: Mark console as CON_ANYTIME
Date: Mon, 15 Nov 2010 21:11:12 +0100 [thread overview]
Message-ID: <1289851872.2109.550.camel@laptop> (raw)
While trying to debug a cpu-hotplug issue I noticed printk() stopped
working once the cpu got marked offline, since the 8250 serial console
doesn't have any per-cpu resources the CON_ANYTIME bit is the safe and
documented way to make it work again.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
---
drivers/serial/8250.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 4d8e14b..09a5508 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -2872,7 +2872,7 @@ static struct console serial8250_console = {
.device = uart_console_device,
.setup = serial8250_console_setup,
.early_setup = serial8250_console_early_setup,
- .flags = CON_PRINTBUFFER,
+ .flags = CON_PRINTBUFFER | CON_ANYTIME,
.index = -1,
.data = &serial8250_reg,
};
reply other threads:[~2010-11-15 20:11 UTC|newest]
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