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path: root/drivers/s390/cio/css.c
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Diffstat (limited to 'drivers/s390/cio/css.c')
-rw-r--r--drivers/s390/cio/css.c32
1 files changed, 22 insertions, 10 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index dfca0ef139f..1c27a5a06b4 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -109,7 +109,7 @@ css_subchannel_release(struct device *dev)
}
}
-int css_sch_device_register(struct subchannel *sch)
+static int css_sch_device_register(struct subchannel *sch)
{
int ret;
@@ -184,8 +184,8 @@ static int css_register_subchannel(struct subchannel *sch)
/* make it known to the system */
ret = css_sch_device_register(sch);
if (ret) {
- printk (KERN_WARNING "%s: could not register %s\n",
- __func__, sch->dev.bus_id);
+ CIO_MSG_EVENT(0, "Could not register sch 0.%x.%04x: %d\n",
+ sch->schid.ssid, sch->schid.sch_no, ret);
return ret;
}
return ret;
@@ -371,15 +371,12 @@ static int __init slow_subchannel_init(void)
spin_lock_init(&slow_subchannel_lock);
slow_subchannel_set = idset_sch_new();
if (!slow_subchannel_set) {
- printk(KERN_WARNING "cio: could not allocate slow subchannel "
- "set\n");
+ CIO_MSG_EVENT(0, "could not allocate slow subchannel set\n");
return -ENOMEM;
}
return 0;
}
-subsys_initcall(slow_subchannel_init);
-
static void css_slow_path_func(struct work_struct *unused)
{
struct subchannel_id schid;
@@ -425,8 +422,8 @@ static int reprobe_subchannel(struct subchannel_id schid, void *data)
struct subchannel *sch;
int ret;
- CIO_DEBUG(KERN_INFO, 6, "cio: reprobe 0.%x.%04x\n",
- schid.ssid, schid.sch_no);
+ CIO_MSG_EVENT(6, "cio: reprobe 0.%x.%04x\n",
+ schid.ssid, schid.sch_no);
if (need_reprobe)
return -EAGAIN;
@@ -642,9 +639,20 @@ init_channel_subsystem (void)
{
int ret, i;
- if (chsc_determine_css_characteristics() == 0)
+ ret = chsc_determine_css_characteristics();
+ if (ret == -ENOMEM)
+ goto out; /* No need to continue. */
+ if (ret == 0)
css_characteristics_avail = 1;
+ ret = chsc_alloc_sei_area();
+ if (ret)
+ goto out;
+
+ ret = slow_subchannel_init();
+ if (ret)
+ goto out;
+
if ((ret = bus_register(&css_bus_type)))
goto out;
@@ -710,6 +718,10 @@ out_unregister:
out_bus:
bus_unregister(&css_bus_type);
out:
+ chsc_free_sei_area();
+ kfree(slow_subchannel_set);
+ printk(KERN_WARNING"cio: failed to initialize css driver (%d)!\n",
+ ret);
return ret;
}