Merge branch 'fixes-2.6.39' into for-2.6.40

4 files changed, 8 insertions, 13 deletions

diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index 2864581..5c56741 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -428,7 +428,7 @@ ccwgroup_online_store (struct device *dev, struct device_attribute *attr, const
 	gdev = to_ccwgroupdev(dev);
 	gdrv = to_ccwgroupdrv(dev->driver);
 
-	if (!try_module_get(gdrv->owner))
+	if (!try_module_get(gdrv->driver.owner))
 		return -EINVAL;
 
 	ret = strict_strtoul(buf, 0, &value);
@@ -442,7 +442,7 @@ ccwgroup_online_store (struct device *dev, struct device_attribute *attr, const
 	else
 		ret = -EINVAL;
 out:
-	module_put(gdrv->owner);
+	module_put(gdrv->driver.owner);
 	return (ret == 0) ? count : ret;
 }
 
@@ -616,8 +616,6 @@ int ccwgroup_driver_register(struct ccwgroup_driver *cdriver)
 {
 	/* register our new driver with the core */
 	cdriver->driver.bus = &ccwgroup_bus_type;
-	cdriver->driver.name = cdriver->name;
-	cdriver->driver.owner = cdriver->owner;
 
 	return driver_register(&cdriver->driver);
 }
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index e50b121..df14c51 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -127,7 +127,7 @@ static int ccw_uevent(struct device *dev, struct kobj_uevent_env *env)
 	return ret;
 }
 
-struct bus_type ccw_bus_type;
+static struct bus_type ccw_bus_type;
 
 static void io_subchannel_irq(struct subchannel *);
 static int io_subchannel_probe(struct subchannel *);
@@ -547,7 +547,7 @@ static ssize_t online_store (struct device *dev, struct device_attribute *attr,
 	if (atomic_cmpxchg(&cdev->private->onoff, 0, 1) != 0)
 		return -EAGAIN;
 
-	if (cdev->drv && !try_module_get(cdev->drv->owner)) {
+	if (cdev->drv && !try_module_get(cdev->drv->driver.owner)) {
 		atomic_set(&cdev->private->onoff, 0);
 		return -EINVAL;
 	}
@@ -573,7 +573,7 @@ static ssize_t online_store (struct device *dev, struct device_attribute *attr,
 	}
 out:
 	if (cdev->drv)
-		module_put(cdev->drv->owner);
+		module_put(cdev->drv->driver.owner);
 	atomic_set(&cdev->private->onoff, 0);
 	return (ret < 0) ? ret : count;
 }
@@ -1970,7 +1970,7 @@ static const struct dev_pm_ops ccw_pm_ops = {
 	.restore = ccw_device_pm_restore,
 };
 
-struct bus_type ccw_bus_type = {
+static struct bus_type ccw_bus_type = {
 	.name   = "ccw",
 	.match  = ccw_bus_match,
 	.uevent = ccw_uevent,
@@ -1993,8 +1993,6 @@ int ccw_driver_register(struct ccw_driver *cdriver)
 	struct device_driver *drv = &cdriver->driver;
 
 	drv->bus = &ccw_bus_type;
-	drv->name = cdriver->name;
-	drv->owner = cdriver->owner;
 
 	return driver_register(drv);
 }
@@ -2112,5 +2110,4 @@ EXPORT_SYMBOL(ccw_device_set_offline);
 EXPORT_SYMBOL(ccw_driver_register);
 EXPORT_SYMBOL(ccw_driver_unregister);
 EXPORT_SYMBOL(get_ccwdev_by_busid);
-EXPORT_SYMBOL(ccw_bus_type);
 EXPORT_SYMBOL_GPL(ccw_device_get_subchannel_id);
diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h
index 379de2d..7e297c7 100644
--- a/drivers/s390/cio/device.h
+++ b/drivers/s390/cio/device.h
@@ -133,7 +133,6 @@ void ccw_device_set_notoper(struct ccw_device *cdev);
 /* qdio needs this. */
 void ccw_device_set_timeout(struct ccw_device *, int);
 extern struct subchannel_id ccw_device_get_subchannel_id(struct ccw_device *);
-extern struct bus_type ccw_bus_type;
 
 /* Channel measurement facility related */
 void retry_set_schib(struct ccw_device *cdev);
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 5640c89..479c665 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -1508,7 +1508,8 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags,
 
 	if (irq_ptr->state != QDIO_IRQ_STATE_ACTIVE)
 		return -EBUSY;
-
+	if (!count)
+		return 0;
 	if (callflags & QDIO_FLAG_SYNC_INPUT)
 		return handle_inbound(irq_ptr->input_qs[q_nr],
 				      callflags, bufnr, count);