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authorPeter Oberparleiter <oberpar@linux.ibm.com>2021-06-11 11:05:40 +0200
committerVasily Gorbik <gor@linux.ibm.com>2021-06-18 16:41:20 +0200
commit5602bf8a7b05084d6fbb15c5889af6861ac61661 (patch)
tree73d242b32ef69431dd464d7cf24adfb59f5d57e2 /drivers/s390
parent21adcf11f62db0347bb95740d02bcf2867ed5e01 (diff)
s390/sclp: Remove console power management support
Power management support was removed for s390 with commit 394216275c7d ("s390: remove broken hibernate / power management support"). Remove leftover sclp console-related power management code. Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/char/sclp_con.c53
-rw-r--r--drivers/s390/char/sclp_rw.c7
-rw-r--r--drivers/s390/char/sclp_rw.h6
3 files changed, 3 insertions, 63 deletions
diff --git a/drivers/s390/char/sclp_con.c b/drivers/s390/char/sclp_con.c
index 9b852a47ccc1..67860769036c 100644
--- a/drivers/s390/char/sclp_con.c
+++ b/drivers/s390/char/sclp_con.c
@@ -35,8 +35,6 @@ static LIST_HEAD(sclp_con_outqueue);
static struct sclp_buffer *sclp_conbuf;
/* Timer for delayed output of console messages */
static struct timer_list sclp_con_timer;
-/* Suspend mode flag */
-static int sclp_con_suspended;
/* Flag that output queue is currently running */
static int sclp_con_queue_running;
@@ -63,7 +61,7 @@ sclp_conbuf_callback(struct sclp_buffer *buffer, int rc)
if (!list_empty(&sclp_con_outqueue))
buffer = list_first_entry(&sclp_con_outqueue,
struct sclp_buffer, list);
- if (!buffer || sclp_con_suspended) {
+ if (!buffer) {
sclp_con_queue_running = 0;
spin_unlock_irqrestore(&sclp_con_lock, flags);
break;
@@ -85,7 +83,7 @@ static void sclp_conbuf_emit(void)
if (sclp_conbuf)
list_add_tail(&sclp_conbuf->list, &sclp_con_outqueue);
sclp_conbuf = NULL;
- if (sclp_con_queue_running || sclp_con_suspended)
+ if (sclp_con_queue_running)
goto out_unlock;
if (list_empty(&sclp_con_outqueue))
goto out_unlock;
@@ -179,8 +177,6 @@ sclp_console_write(struct console *console, const char *message,
if (list_empty(&sclp_con_pages))
sclp_console_full++;
while (list_empty(&sclp_con_pages)) {
- if (sclp_con_suspended)
- goto out;
if (sclp_console_drop_buffer())
break;
spin_unlock_irqrestore(&sclp_con_lock, flags);
@@ -213,7 +209,6 @@ sclp_console_write(struct console *console, const char *message,
!timer_pending(&sclp_con_timer)) {
mod_timer(&sclp_con_timer, jiffies + HZ / 10);
}
-out:
spin_unlock_irqrestore(&sclp_con_lock, flags);
}
@@ -234,32 +229,6 @@ sclp_console_flush(void)
sclp_console_sync_queue();
}
-/*
- * Resume console: If there are cached messages, emit them.
- */
-static void sclp_console_resume(void)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&sclp_con_lock, flags);
- sclp_con_suspended = 0;
- spin_unlock_irqrestore(&sclp_con_lock, flags);
- sclp_conbuf_emit();
-}
-
-/*
- * Suspend console: Set suspend flag and flush console
- */
-static void sclp_console_suspend(void)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&sclp_con_lock, flags);
- sclp_con_suspended = 1;
- spin_unlock_irqrestore(&sclp_con_lock, flags);
- sclp_console_flush();
-}
-
static int sclp_console_notify(struct notifier_block *self,
unsigned long event, void *data)
{
@@ -269,7 +238,7 @@ static int sclp_console_notify(struct notifier_block *self,
static struct notifier_block on_panic_nb = {
.notifier_call = sclp_console_notify,
- .priority = SCLP_PANIC_PRIO_CLIENT,
+ .priority = 1,
};
static struct notifier_block on_reboot_nb = {
@@ -291,22 +260,6 @@ static struct console sclp_console =
};
/*
- * This function is called for SCLP suspend and resume events.
- */
-void sclp_console_pm_event(enum sclp_pm_event sclp_pm_event)
-{
- switch (sclp_pm_event) {
- case SCLP_PM_EVENT_FREEZE:
- sclp_console_suspend();
- break;
- case SCLP_PM_EVENT_RESTORE:
- case SCLP_PM_EVENT_THAW:
- sclp_console_resume();
- break;
- }
-}
-
-/*
* called by console_init() in drivers/char/tty_io.c at boot-time.
*/
static int __init
diff --git a/drivers/s390/char/sclp_rw.c b/drivers/s390/char/sclp_rw.c
index d6c84e354df5..de44c15fe03a 100644
--- a/drivers/s390/char/sclp_rw.c
+++ b/drivers/s390/char/sclp_rw.c
@@ -26,16 +26,9 @@
*/
#define MAX_SCCB_ROOM (PAGE_SIZE - sizeof(struct sclp_buffer))
-static void sclp_rw_pm_event(struct sclp_register *reg,
- enum sclp_pm_event sclp_pm_event)
-{
- sclp_console_pm_event(sclp_pm_event);
-}
-
/* Event type structure for write message and write priority message */
static struct sclp_register sclp_rw_event = {
.send_mask = EVTYP_MSG_MASK,
- .pm_event_fn = sclp_rw_pm_event,
};
/*
diff --git a/drivers/s390/char/sclp_rw.h b/drivers/s390/char/sclp_rw.h
index 93d706e4935c..a9127489f224 100644
--- a/drivers/s390/char/sclp_rw.h
+++ b/drivers/s390/char/sclp_rw.h
@@ -88,10 +88,4 @@ int sclp_write(struct sclp_buffer *buffer, const unsigned char *, int);
int sclp_emit_buffer(struct sclp_buffer *,void (*)(struct sclp_buffer *,int));
int sclp_chars_in_buffer(struct sclp_buffer *);
-#ifdef CONFIG_SCLP_CONSOLE
-void sclp_console_pm_event(enum sclp_pm_event sclp_pm_event);
-#else
-static inline void sclp_console_pm_event(enum sclp_pm_event sclp_pm_event) { }
-#endif
-
#endif /* __SCLP_RW_H__ */