From: Feng Tang <feng.tang@intel.com>
To: linux-serial@vger.kernel.org, gregkh@linuxfoundation.org,
alan@linux.intel.com
Cc: Feng Tang <feng.tang@intel.com>
Subject: [PATCH v2] serial: mfd: Add nmi_touch_watchdog() into the console write function
Date: Thu, 15 Nov 2012 16:03:16 +0800 [thread overview]
Message-ID: <1352966596-4420-1-git-send-email-feng.tang@intel.com> (raw)
This is following what 8250 driver is doing in console write function,
to avoid the hardware lockup case.
v2: incldudes the <linux/nmi.h>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Acked-by: Alan Cox <alan@linux.intel.com>
---
drivers/tty/serial/mfd.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/tty/serial/mfd.c b/drivers/tty/serial/mfd.c
index c4b50af..79fe59b 100644
--- a/drivers/tty/serial/mfd.c
+++ b/drivers/tty/serial/mfd.c
@@ -36,6 +36,7 @@
#include <linux/serial_mfd.h>
#include <linux/dma-mapping.h>
#include <linux/pci.h>
+#include <linux/nmi.h>
#include <linux/io.h>
#include <linux/debugfs.h>
#include <linux/pm_runtime.h>
@@ -1113,6 +1114,8 @@ serial_hsu_console_write(struct console *co, const char *s, unsigned int count)
unsigned int ier;
int locked = 1;
+ touch_nmi_watchdog();
+
local_irq_save(flags);
if (up->port.sysrq)
locked = 0;
--
1.7.9.5
reply other threads:[~2012-11-15 8:03 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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