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path: root/drivers/s390/char
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Diffstat (limited to 'drivers/s390/char')
-rw-r--r--drivers/s390/char/sclp.c6
-rw-r--r--drivers/s390/char/sclp_cmd.c5
-rw-r--r--drivers/s390/char/sclp_config.c13
3 files changed, 10 insertions, 14 deletions
diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c
index 3c8b25e6c34..1fd8f2193ed 100644
--- a/drivers/s390/char/sclp.c
+++ b/drivers/s390/char/sclp.c
@@ -399,6 +399,7 @@ sclp_tod_from_jiffies(unsigned long jiffies)
void
sclp_sync_wait(void)
{
+ unsigned long long old_tick;
unsigned long flags;
unsigned long cr0, cr0_sync;
u64 timeout;
@@ -419,11 +420,12 @@ sclp_sync_wait(void)
if (!irq_context)
local_bh_disable();
/* Enable service-signal interruption, disable timer interrupts */
+ old_tick = local_tick_disable();
trace_hardirqs_on();
__ctl_store(cr0, 0, 0);
cr0_sync = cr0;
+ cr0_sync &= 0xffff00a0;
cr0_sync |= 0x00000200;
- cr0_sync &= 0xFFFFF3AC;
__ctl_load(cr0_sync, 0, 0);
__raw_local_irq_stosm(0x01);
/* Loop until driver state indicates finished request */
@@ -439,9 +441,9 @@ sclp_sync_wait(void)
__ctl_load(cr0, 0, 0);
if (!irq_context)
_local_bh_enable();
+ local_tick_enable(old_tick);
local_irq_restore(flags);
}
-
EXPORT_SYMBOL(sclp_sync_wait);
/* Dispatch changes in send and receive mask to registered listeners. */
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index 0c2b77493db..eb5f1b8bc57 100644
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -427,6 +427,8 @@ static int sclp_mem_notifier(struct notifier_block *nb,
sclp_attach_storage(id);
switch (action) {
case MEM_ONLINE:
+ case MEM_GOING_OFFLINE:
+ case MEM_CANCEL_OFFLINE:
break;
case MEM_GOING_ONLINE:
rc = sclp_mem_change_state(start, size, 1);
@@ -434,6 +436,9 @@ static int sclp_mem_notifier(struct notifier_block *nb,
case MEM_CANCEL_ONLINE:
sclp_mem_change_state(start, size, 0);
break;
+ case MEM_OFFLINE:
+ sclp_mem_change_state(start, size, 0);
+ break;
default:
rc = -EINVAL;
break;
diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c
index fff4ff485d9..4cebd6ee6d2 100644
--- a/drivers/s390/char/sclp_config.c
+++ b/drivers/s390/char/sclp_config.c
@@ -8,7 +8,6 @@
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/cpu.h>
-#include <linux/kthread.h>
#include <linux/sysdev.h>
#include <linux/workqueue.h>
#include <asm/smp.h>
@@ -41,19 +40,9 @@ static void sclp_cpu_capability_notify(struct work_struct *work)
put_online_cpus();
}
-static int sclp_cpu_kthread(void *data)
-{
- smp_rescan_cpus();
- return 0;
-}
-
static void __ref sclp_cpu_change_notify(struct work_struct *work)
{
- /* Can't call smp_rescan_cpus() from workqueue context since it may
- * deadlock in case of cpu hotplug. So we have to create a kernel
- * thread in order to call it.
- */
- kthread_run(sclp_cpu_kthread, NULL, "cpu_rescan");
+ smp_rescan_cpus();
}
static void sclp_conf_receiver_fn(struct evbuf_header *evbuf)