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-rw-r--r--drivers/s390/cio/cio.c11
-rw-r--r--drivers/s390/cio/cio.h4
-rw-r--r--drivers/s390/cio/css.c31
-rw-r--r--drivers/s390/cio/css.h1
4 files changed, 24 insertions, 23 deletions
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index ab99500604b..3ab99d88388 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -749,9 +749,16 @@ int cio_is_console(struct subchannel_id schid)
return schid_equal(&schid, &console_sch->schid);
}
-struct subchannel *cio_get_console_subchannel(void)
+void cio_register_early_subchannels(void)
{
- return console_sch;
+ int ret;
+
+ if (!console_sch)
+ return;
+
+ ret = css_register_subchannel(console_sch);
+ if (ret)
+ put_device(&console_sch->dev);
}
#endif /* CONFIG_CCW_CONSOLE */
diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h
index 78975471ef2..57b41ec2ed4 100644
--- a/drivers/s390/cio/cio.h
+++ b/drivers/s390/cio/cio.h
@@ -129,11 +129,11 @@ void do_IRQ(struct pt_regs *);
#ifdef CONFIG_CCW_CONSOLE
extern struct subchannel *cio_probe_console(void);
extern int cio_is_console(struct subchannel_id);
-extern struct subchannel *cio_get_console_subchannel(void);
+extern void cio_register_early_subchannels(void);
extern void cio_tsch(struct subchannel *sch);
#else
#define cio_is_console(schid) 0
-#define cio_get_console_subchannel() NULL
+static inline void cio_register_early_subchannels(void) {}
#endif
#endif
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index fb0e64f1845..3b2245f58bd 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -224,16 +224,11 @@ void css_update_ssd_info(struct subchannel *sch)
{
int ret;
- if (cio_is_console(sch->schid)) {
- /* Console is initialized too early for functions requiring
- * memory allocation. */
+ ret = chsc_get_ssd_info(sch->schid, &sch->ssd_info);
+ if (ret)
ssd_from_pmcw(&sch->ssd_info, &sch->schib.pmcw);
- } else {
- ret = chsc_get_ssd_info(sch->schid, &sch->ssd_info);
- if (ret)
- ssd_from_pmcw(&sch->ssd_info, &sch->schib.pmcw);
- ssd_register_chpids(&sch->ssd_info);
- }
+
+ ssd_register_chpids(&sch->ssd_info);
}
static ssize_t type_show(struct device *dev, struct device_attribute *attr,
@@ -271,7 +266,7 @@ static const struct attribute_group *default_subch_attr_groups[] = {
NULL,
};
-static int css_register_subchannel(struct subchannel *sch)
+int css_register_subchannel(struct subchannel *sch)
{
int ret;
@@ -314,13 +309,10 @@ int css_probe_device(struct subchannel_id schid)
int ret;
struct subchannel *sch;
- if (cio_is_console(schid))
- sch = cio_get_console_subchannel();
- else {
- sch = css_alloc_subchannel(schid);
- if (IS_ERR(sch))
- return PTR_ERR(sch);
- }
+ sch = css_alloc_subchannel(schid);
+ if (IS_ERR(sch))
+ return PTR_ERR(sch);
+
ret = css_register_subchannel(sch);
if (ret)
put_device(&sch->dev);
@@ -864,8 +856,7 @@ static struct notifier_block css_power_notifier = {
/*
* Now that the driver core is running, we can setup our channel subsystem.
- * The struct subchannel's are created during probing (except for the
- * static console subchannel).
+ * The struct subchannel's are created during probing.
*/
static int __init css_bus_init(void)
{
@@ -1044,6 +1035,8 @@ int css_complete_work(void)
*/
static int __init channel_subsystem_init_sync(void)
{
+ /* Register subchannels which are already in use. */
+ cio_register_early_subchannels();
/* Start initial subchannel evaluation. */
css_schedule_eval_all();
css_complete_work();
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index 6ab424d753a..2581b698656 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -102,6 +102,7 @@ extern void css_driver_unregister(struct css_driver *);
extern void css_sch_device_unregister(struct subchannel *);
extern int css_probe_device(struct subchannel_id);
+extern int css_register_subchannel(struct subchannel *);
extern struct subchannel *css_alloc_subchannel(struct subchannel_id);
extern struct subchannel *get_subchannel_by_schid(struct subchannel_id);
extern int css_init_done;