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path: root/drivers/s390/char/sclp_con.c
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Diffstat (limited to 'drivers/s390/char/sclp_con.c')
-rw-r--r--drivers/s390/char/sclp_con.c24
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/s390/char/sclp_con.c b/drivers/s390/char/sclp_con.c
index 7e619c534bf4..9a25c4bd1421 100644
--- a/drivers/s390/char/sclp_con.c
+++ b/drivers/s390/char/sclp_con.c
@@ -16,6 +16,7 @@
#include <linux/bootmem.h>
#include <linux/termios.h>
#include <linux/err.h>
+#include <linux/reboot.h>
#include "sclp.h"
#include "sclp_rw.h"
@@ -172,7 +173,7 @@ sclp_console_device(struct console *c, int *index)
* will be flushed to the SCLP.
*/
static void
-sclp_console_unblank(void)
+sclp_console_flush(void)
{
unsigned long flags;
@@ -188,6 +189,24 @@ sclp_console_unblank(void)
spin_unlock_irqrestore(&sclp_con_lock, flags);
}
+static int
+sclp_console_notify(struct notifier_block *self,
+ unsigned long event, void *data)
+{
+ sclp_console_flush();
+ return NOTIFY_OK;
+}
+
+static struct notifier_block on_panic_nb = {
+ .notifier_call = sclp_console_notify,
+ .priority = 1,
+};
+
+static struct notifier_block on_reboot_nb = {
+ .notifier_call = sclp_console_notify,
+ .priority = 1,
+};
+
/*
* used to register the SCLP console to the kernel and to
* give printk necessary information
@@ -197,7 +216,6 @@ static struct console sclp_console =
.name = sclp_console_name,
.write = sclp_console_write,
.device = sclp_console_device,
- .unblank = sclp_console_unblank,
.flags = CON_PRINTBUFFER,
.index = 0 /* ttyS0 */
};
@@ -241,6 +259,8 @@ sclp_console_init(void)
sclp_con_width_htab = 8;
/* enable printk-access to this driver */
+ atomic_notifier_chain_register(&panic_notifier_list, &on_panic_nb);
+ register_reboot_notifier(&on_reboot_nb);
register_console(&sclp_console);
return 0;
}