From: Greg Kroah-Hartman <gregkh@suse.de>
To: linux-kernel@vger.kernel.org
Cc: Peter Zijlstra <peterz@infradead.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Greg Kroah-Hartman <gregkh@suse.de>
Subject: [PATCH 1/6] serial8250: Mark console as CON_ANYTIME
Date: Thu, 2 Dec 2010 13:08:18 -0800 [thread overview]
Message-ID: <1291324103-7054-1-git-send-email-gregkh@suse.de> (raw)
In-Reply-To: <20101202204827.GB5927@kroah.com>
From: Peter Zijlstra <peterz@infradead.org>
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
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,
};
--
1.7.1
next prev parent reply other threads:[~2010-12-02 21:08 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-02 20:48 [GIT PATCH] TTY/serial fixes for .37-rc4 Greg KH
2010-12-02 21:08 ` Greg Kroah-Hartman [this message]
2010-12-02 21:08 ` [PATCH 2/6] TTY: ldisc, fix open flag handling Greg Kroah-Hartman
2010-12-02 21:08 ` [PATCH 3/6] NET: wan/x25, fix ldisc->open retval Greg Kroah-Hartman
2010-12-02 21:08 ` [PATCH 4/6] TTY: don't allow reopen when ldisc is changing Greg Kroah-Hartman
2010-12-02 21:08 ` [PATCH 5/6] TTY: open/hangup race fixup Greg Kroah-Hartman
2010-12-02 21:08 ` [PATCH 6/6] serial: mfd: adjust the baud rate setting Greg Kroah-Hartman
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