[PATCH] s390: common i/o layer.

 - Remove initialization of device.name.
 - Don't do put_device after failed get_device in get_ccwdev_by_busid.
 - Fix read_dev_chars and read_conf_data.
 - Call interrupt function of ccw device if path verification has been started.
 - Replace atomic_return_add by atomic_add_return in qdio.
 - Use wait_event instead of homegrown wait loop.
 - Fix reestablish queue problem.
 - Add ungroup attribute to ccw_group devices and add links from each
   ccw device of a group to the group device.
 - Use BUS_ID_SIZE instead of DEVICE_ID_SIZE.
 - Delay path verification if a basic sense is required.
 - Move qdio shutdown code from qdio_free to qdio_shutdown.

drivers/s390/cio/ccwgroup.c

 /*
  *  drivers/s390/cio/ccwgroup.c
  *  bus driver for ccwgroup
- *   $Revision: 1.7 $
+ *   $Revision: 1.15 $
  *
  *    Copyright (C) 2002 IBM Deutschland Entwicklung GmbH,
  *                       IBM Corporation
  *    Author(s): Arnd Bergmann (arndb@de.ibm.com)
+ *               Cornelia Huck (cohuck@de.ibm.com)
  */
 #include <linux/module.h>
 #include <linux/errno.h>
@@ -14,6 +15,7 @@
 #include <linux/device.h>
 #include <linux/init.h>
 #include <linux/ctype.h>
+#include <linux/dcache.h>
 
 #include <asm/semaphore.h>
 #include <asm/ccwdev.h>
@@ -56,6 +58,45 @@ static struct bus_type ccwgroup_bus_type = {
 	.hotplug = ccwgroup_hotplug,
 };
 
+static inline void
+__ccwgroup_remove_symlinks(struct ccwgroup_device *gdev)
+{
+	int i;
+	char str[8];
+
+	for (i = 0; i < gdev->count; i++) {
+		sprintf(str, "cdev%d", i);
+		sysfs_remove_link(&gdev->dev.kobj, str);
+		/* Hack: Make sure we act on still valid subdirs. */
+		if (atomic_read(&gdev->cdev[i]->dev.kobj.dentry->d_count))
+			sysfs_remove_link(&gdev->cdev[i]->dev.kobj,
+					  "group_device");
+	}
+	
+}
+
+/*
+ * Provide an 'ungroup' attribute so the user can remove group devices no
+ * longer needed or accidentially created. Saves memory :)
+ */
+static ssize_t
+ccwgroup_ungroup_store(struct device *dev, const char *buf, size_t count)
+{
+	struct ccwgroup_device *gdev;
+
+	gdev = to_ccwgroupdev(dev);
+
+	if (gdev->state != CCWGROUP_OFFLINE)
+		return -EINVAL;
+
+	__ccwgroup_remove_symlinks(gdev);
+	device_unregister(dev);
+
+	return count;
+}
+
+static DEVICE_ATTR(ungroup, 0200, NULL, ccwgroup_ungroup_store);
+
 static void
 ccwgroup_release (struct device *dev)
 {
@@ -69,6 +110,40 @@ ccwgroup_release (struct device *dev)
 	kfree(gdev);
 }
 
+static inline int
+__ccwgroup_create_symlinks(struct ccwgroup_device *gdev)
+{
+	char str[8];
+	int i, rc;
+
+	for (i = 0; i < gdev->count; i++) {
+		rc = sysfs_create_link(&gdev->cdev[i]->dev.kobj, &gdev->dev.kobj,
+				       "group_device");
+		if (rc) {
+			for (--i; i >= 0; i--)
+				sysfs_remove_link(&gdev->cdev[i]->dev.kobj,
+						  "group_device");
+			return rc;
+		}
+	}
+	for (i = 0; i < gdev->count; i++) {
+		sprintf(str, "cdev%d", i);
+		rc = sysfs_create_link(&gdev->dev.kobj, &gdev->cdev[i]->dev.kobj,
+				       str);
+		if (rc) {
+			for (--i; i >= 0; i--) {
+				sprintf(str, "cdev%d", i);
+				sysfs_remove_link(&gdev->dev.kobj, str);
+			}
+			for (i = 0; i < gdev->count; i++)
+				sysfs_remove_link(&gdev->cdev[i]->dev.kobj,
+						  "group_device");
+			return rc;
+		}
+	}
+	return 0;
+}
+
 /*
  * try to add a new ccwgroup device for one driver
  * argc and argv[] are a list of bus_id's of devices
@@ -82,6 +157,7 @@ ccwgroup_create(struct device *root,
 {
 	struct ccwgroup_device *gdev;
 	int i;
+	int rc;
 
 	if (argc > 256) /* disallow dumb users */
 		return -EINVAL;
@@ -90,6 +166,8 @@ ccwgroup_create(struct device *root,
 	if (!gdev)
 		return -ENOMEM;
 
+	memset(gdev, 0, sizeof(*gdev) + argc*sizeof(gdev->cdev[0]));
+
 	for (i = 0; i < argc; i++) {
 		gdev->cdev[i] = get_ccwdev_by_busid(cdrv, argv[i]);
 
@@ -97,9 +175,11 @@ ccwgroup_create(struct device *root,
 		 * order to be grouped */
 		if (!gdev->cdev[i]
 		    || gdev->cdev[i]->id.driver_info !=
-		       gdev->cdev[0]->id.driver_info)
+		    gdev->cdev[0]->id.driver_info) {
+			rc = -EINVAL;
 			goto error;
 		}
+	}
 
 	*gdev = (struct ccwgroup_device) {
 		.creator_id = creator_id,
@@ -114,9 +194,24 @@ ccwgroup_create(struct device *root,
 	snprintf (gdev->dev.bus_id, BUS_ID_SIZE, "%s",
 			gdev->cdev[0]->dev.bus_id);
 
-	/* TODO: make symlinks for sysfs */
-	return device_register(&gdev->dev);
+	rc = device_register(&gdev->dev);
+	
+	if (rc)
+		goto error;
+
+	rc = device_create_file(&gdev->dev, &dev_attr_ungroup);
 
+	if (rc) {
+		device_unregister(&gdev->dev);
+		goto error;
+	}
+
+	rc = __ccwgroup_create_symlinks(gdev);
+	if (!rc)
+		return 0;
+
+	device_remove_file(&gdev->dev, &dev_attr_ungroup);
+	device_unregister(&gdev->dev);
 error:
 	for (i = 0; i < argc; i++)
 		if (gdev->cdev[i])
@@ -124,7 +219,7 @@ ccwgroup_create(struct device *root,
 
 	kfree(gdev);
 
-	return -EINVAL;
+	return rc;
 }
 
 static int __init
@@ -213,7 +308,7 @@ ccwgroup_online_show (struct device *dev, char *buf)
 
 	online = (to_ccwgroupdev(dev)->state == CCWGROUP_ONLINE);
 
-	return sprintf(buf, online ? "yes\n" : "no\n");
+	return sprintf(buf, online ? "1\n" : "0\n");
 }
 
 static DEVICE_ATTR(online, 0644, ccwgroup_online_show, ccwgroup_online_store);
@@ -286,9 +381,59 @@ ccwgroup_probe_ccwdev(struct ccw_device *cdev)
 	return 0;
 }
 
+static inline struct ccwgroup_device *
+__ccwgroup_get_gdev_by_cdev(struct ccw_device *cdev)
+{
+	struct ccwgroup_device *gdev;
+	struct list_head *entry;
+	struct device *dev;
+	int i, found;
+
+	/*
+	 * Find groupdevice cdev belongs to.
+	 * Unfortunately, we can't use bus_for_each_dev() because of the
+	 * semaphore (and return value of fn() is int).
+	 */
+	if (!get_bus(&ccwgroup_bus_type))
+		return NULL;
+
+	gdev = NULL;
+	down_read(&ccwgroup_bus_type.subsys.rwsem);
+
+	list_for_each(entry, &ccwgroup_bus_type.devices.list) {
+		dev = get_device(container_of(entry, struct device, bus_list));
+		found = 0;
+		if (!dev)
+			continue;
+		gdev = to_ccwgroupdev(dev);
+		for (i = 0; i < gdev->count && (!found); i++) {
+			if (gdev->cdev[i] == cdev)
+				found = 1;
+		}
+		if (found)
+			break;
+		put_device(dev);
+		gdev = NULL;
+	}
+	up_read(&ccwgroup_bus_type.subsys.rwsem);
+	put_bus(&ccwgroup_bus_type);
+
+	return gdev;
+}
+
 int
 ccwgroup_remove_ccwdev(struct ccw_device *cdev)
 {
+	struct ccwgroup_device *gdev;
+
+	/* If one of its devices is gone, the whole group is done for. */
+	gdev = __ccwgroup_get_gdev_by_cdev(cdev);
+	if (gdev) {
+		ccwgroup_set_offline(gdev);
+		__ccwgroup_remove_symlinks(gdev);
+		device_unregister(&gdev->dev);
+		put_device(&gdev->dev);
+	}
 	return 0;
 }
 

drivers/s390/cio/chsc.c

 /*
  *  drivers/s390/cio/chsc.c
  *   S/390 common I/O routines -- channel subsystem call
- *   $Revision: 1.74 $
+ *   $Revision: 1.77 $
  *
  *    Copyright (C) 1999-2002 IBM Deutschland Entwicklung GmbH,
  *			      IBM Corporation
@@ -865,9 +865,7 @@ new_channel_path(int chpid, int status)
 	chp->state = status;
 	chp->dev.parent = &css_bus_device;
 
-	snprintf(chp->dev.name, DEVICE_NAME_SIZE,
-		 "channel path %x", chpid);
-	snprintf(chp->dev.bus_id, DEVICE_ID_SIZE, "chp%x", chpid);
+	snprintf(chp->dev.bus_id, BUS_ID_SIZE, "chp0.%x", chpid);
 
 	/* make it known to the system */
 	ret = device_register(&chp->dev);

drivers/s390/cio/cio.c

 /*
  *  drivers/s390/cio/cio.c
  *   S/390 common I/O routines -- low level i/o calls
- *   $Revision: 1.100 $
+ *   $Revision: 1.105 $
  *
  *    Copyright (C) 1999-2002 IBM Deutschland Entwicklung GmbH,
  *			      IBM Corporation
@@ -277,11 +277,6 @@ cio_halt(struct subchannel *sch)
 	if (!sch)
 		return -ENODEV;
 
-	/*
-	 * we ignore the halt_io() request if ending_status was received but
-	 *  a SENSE operation is waiting for completion.
-	 */
-
 	sprintf (dbf_txt, "haltIO%x", sch->irq);
 	CIO_TRACE_EVENT (2, dbf_txt);
 
@@ -316,10 +311,6 @@ cio_clear(struct subchannel *sch)
 
 	if (!sch)
 		return -ENODEV;
-	/*
-	 * we ignore the clear_io() request if ending_status was received but
-	 *  a SENSE operation is waiting for completion.
-	 */
 
 	sprintf (dbf_txt, "clearIO%x", sch->irq);
 	CIO_TRACE_EVENT (2, dbf_txt);
@@ -380,7 +371,7 @@ cio_cancel (struct subchannel *sch)
 }
 
 /*
- * Function: cio_cancel
+ * Function: cio_modify
  * Issues a "Modify Subchannel" on the specified subchannel
  */
 static int
@@ -469,11 +460,6 @@ cio_disable_subchannel (struct subchannel *sch)
 	sprintf (dbf_txt, "dissch%x", sch->irq);
 	CIO_TRACE_EVENT (2, dbf_txt);
 
-	/*
-	 * If device isn't operational we have to perform delayed
-	 *  disabling when the next interrupt occurs - unless the
-	 *  irq is re-requested prior to the interrupt to occur.
-	 */
 	ccode = stsch (sch->irq, &sch->schib);
 	if (ccode == 3)		/* Not operational. */
 		return -ENODEV;

drivers/s390/cio/css.c

 /*
  *  drivers/s390/cio/css.c
  *  driver for channel subsystem
- *   $Revision: 1.43 $
+ *   $Revision: 1.49 $
  *
  *    Copyright (C) 2002 IBM Deutschland Entwicklung GmbH,
  *			 IBM Corporation
@@ -27,7 +27,6 @@ unsigned int highest_subchannel;
 int css_init_done = 0;
 
 struct device css_bus_device = {
-	.name	= "Channel Subsystem 0",
 	.bus_id = "css0",
 };
 
@@ -79,17 +78,6 @@ css_free_subchannel(int irq)
 static int
 css_register_subchannel(struct subchannel *sch)
 {
-	static const char *subchannel_types[] = {
-		"I/O Subchannel",
-		"CHSC Subchannel",
-		"Message Subchannel",
-		"ADM Subchannel",
-		"undefined subchannel type 4",
-		"undefined subchannel type 5",
-		"undefined subchannel type 6",
-		"undefined subchannel type 7",
-		"undefined subchannel type 8",
-	};
 	int ret;
 
 	/* Initialize the subchannel structure */
@@ -97,8 +85,7 @@ css_register_subchannel(struct subchannel *sch)
 	sch->dev.bus = &css_bus_type;
 
 	/* Set a name for the subchannel */
-	strlcpy (sch->dev.name, subchannel_types[sch->st], DEVICE_NAME_SIZE);
-	snprintf (sch->dev.bus_id, DEVICE_ID_SIZE, "0:%04x", sch->irq);
+	snprintf (sch->dev.bus_id, BUS_ID_SIZE, "0.0.%04x", sch->irq);
 
 	/* make it known to the system */
 	ret = device_register(&sch->dev);

drivers/s390/cio/css.h

@@ -78,6 +78,7 @@ struct ccw_device_private {
 		unsigned int pgid_single:1; /* use single path for Set PGID */
 		unsigned int esid:1;        /* Ext. SenseID supported by HW */
 		unsigned int dosense:1;	    /* delayed SENSE required */
+		unsigned int doverify:1;    /* delayed path verification */
 	} __attribute__((packed)) flags;
 	unsigned long intparm;	/* user interruption parameter */
 	struct qdio_irq *qdio_data;

drivers/s390/cio/device.c

 /*
  *  drivers/s390/cio/device.c
  *  bus driver for ccw devices
- *   $Revision: 1.60 $
+ *   $Revision: 1.70 $
  *
  *    Copyright (C) 2002 IBM Deutschland Entwicklung GmbH,
  *			 IBM Corporation
@@ -229,7 +229,7 @@ online_show (struct device *dev, char *buf)
 {
 	struct ccw_device *cdev = to_ccwdev(dev);
 
-	return sprintf(buf, cdev->online ? "yes\n" : "no\n");
+	return sprintf(buf, cdev->online ? "1\n" : "0\n");
 }
 
 void
@@ -537,8 +537,7 @@ io_subchannel_recog(struct ccw_device *cdev, struct subchannel *sch)
 	init_timer(&cdev->private->timer);
 
 	/* Set an initial name for the device. */
-	snprintf (cdev->dev.name, DEVICE_NAME_SIZE,"ccw device");
-	snprintf (cdev->dev.bus_id, DEVICE_ID_SIZE, "0:%04x",
+	snprintf (cdev->dev.bus_id, BUS_ID_SIZE, "0.0.%04x",
 		  sch->schib.pmcw.dev);
 
 	/* Increase counter of devices currently in recognition. */
@@ -679,6 +678,7 @@ ccw_device_probe_console(void)
 		console_cdev_in_use = 0;
 		return ERR_PTR(ret);
 	}
+	console_cdev.online = 1;
 	return &console_cdev;
 }
 #endif
@@ -702,10 +702,12 @@ get_ccwdev_by_busid(struct ccw_driver *cdrv, const char *bus_id)
 	list_for_each_entry(d, &drv->devices, driver_list) {
 		dev = get_device(d);
 
-		if (dev && !strncmp(bus_id, dev->bus_id, DEVICE_ID_SIZE))
+		if (dev && !strncmp(bus_id, dev->bus_id, BUS_ID_SIZE))
 			break;
-		else
+		else if (dev) {
 			put_device(dev);
+			dev = NULL;
+		}
 	}
 	up_read(&drv->bus->subsys.rwsem);
 	put_driver(drv);

drivers/s390/cio/device.h

@@ -15,8 +15,6 @@ enum dev_state {
 	DEV_STATE_DISBAND_PGID,
 	DEV_STATE_BOXED,
 	/* states to wait for i/o completion before doing something */
-	DEV_STATE_ONLINE_VERIFY,
-	DEV_STATE_W4SENSE_VERIFY,
 	DEV_STATE_CLEAR_VERIFY,
 	DEV_STATE_TIMEOUT_KILL,
 	/* last element! */
@@ -95,7 +93,7 @@ void ccw_device_disband_start(struct ccw_device *);
 void ccw_device_disband_irq(struct ccw_device *, enum dev_event);
 void ccw_device_disband_done(struct ccw_device *, int);
 
-void ccw_device_call_handler(struct ccw_device *);
+int ccw_device_call_handler(struct ccw_device *);
 
 void ccw_device_add_stlck(void *);
 int ccw_device_stlck(struct ccw_device *);

drivers/s390/cio/device_fsm.c

@@ -269,6 +269,7 @@ ccw_device_recog_timeout(struct ccw_device *cdev, enum dev_event dev_event)
 void
 ccw_device_verify_done(struct ccw_device *cdev, int err)
 {
+	cdev->private->flags.doverify = 0;
 	switch (err) {
 	case 0:
 		ccw_device_done(cdev, DEV_STATE_ONLINE);
@@ -419,13 +420,21 @@ ccw_device_online_verify(struct ccw_device *cdev, enum dev_event dev_event)
 {
 	struct subchannel *sch;
 
-	sch = to_subchannel(cdev->dev.parent);
+	if (!cdev->private->options.pgroup)
+		return;
 	if (cdev->private->state == DEV_STATE_W4SENSE) {
-		cdev->private->state = DEV_STATE_W4SENSE_VERIFY;
+		cdev->private->flags.doverify = 1;
 		return;
 	}
-	if (sch->schib.scsw.actl != 0) {
-		cdev->private->state = DEV_STATE_ONLINE_VERIFY;
+	sch = to_subchannel(cdev->dev.parent);
+	if (sch->schib.scsw.actl != 0 ||
+	    (cdev->private->irb.scsw.stctl & SCSW_STCTL_STATUS_PEND)) {
+		/*
+		 * No final status yet or final status not yet delivered
+		 * to the device driver. Can't do path verfication now,
+		 * delay until final status was delivered.
+		 */
+		cdev->private->flags.doverify = 1;
 		return;
 	}
 	/* Device is idle, we can do the path verification. */
@@ -453,19 +462,14 @@ ccw_device_irq(struct ccw_device *cdev, enum dev_event dev_event)
 	ccw_device_accumulate_irb(cdev, irb);
 	if (cdev->private->flags.dosense) {
 		if (ccw_device_do_sense(cdev, irb) == 0) {
-			/* Check if we have to trigger path verification. */
-			if (irb->esw.esw0.erw.pvrf)
-				cdev->private->state = DEV_STATE_W4SENSE_VERIFY;
-			else
 			cdev->private->state = DEV_STATE_W4SENSE;
 		}
 		return;
 	}
-	if (irb->esw.esw0.erw.pvrf)
-		/* Try to start path verification. */
+	/* Call the handler. */
+	if (ccw_device_call_handler(cdev) && cdev->private->flags.doverify)
+		/* Start delayed path verification. */
 		ccw_device_online_verify(cdev, 0);
-	/* No basic sense required, call the handler. */
-	ccw_device_call_handler(cdev);
 }
 
 /*
@@ -485,32 +489,6 @@ ccw_device_online_timeout(struct ccw_device *cdev, enum dev_event dev_event)
 			      ERR_PTR(-ETIMEDOUT));
 }
 
-static void
-ccw_device_irq_verify(struct ccw_device *cdev, enum dev_event dev_event)
-{
-	struct irb *irb;
-
-	irb = (struct irb *) __LC_IRB;
-	/* Check for unsolicited interrupt. */
-	if (irb->scsw.stctl ==
-	    		(SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)) {
-		if (cdev->handler)
-			cdev->handler (cdev, 0, irb);
-		return;
-	}
-	/* Accumulate status and find out if a basic sense is needed. */
-	ccw_device_accumulate_irb(cdev, irb);
-	if (cdev->private->flags.dosense) {
-		if (ccw_device_do_sense(cdev, irb) == 0)
-			cdev->private->state = DEV_STATE_W4SENSE_VERIFY;
-		return;
-	}
-	/* Try to start delayed device verification. */
-	ccw_device_online_verify(cdev, 0);
-	/* No basic sense required, call the handler. */
-	ccw_device_call_handler(cdev);
-}
-
 /*
  * Got an interrupt for a basic sense.
  */
@@ -530,46 +508,15 @@ ccw_device_w4sense(struct ccw_device *cdev, enum dev_event dev_event)
 	/* Add basic sense info to irb. */
 	ccw_device_accumulate_basic_sense(cdev, irb);
 	if (cdev->private->flags.dosense) {
-		/* Check if we have to trigger path verification. */
-		if (irb->esw.esw0.erw.pvrf)
-			cdev->private->state = DEV_STATE_W4SENSE_VERIFY;
 		/* Another basic sense is needed. */
 		ccw_device_do_sense(cdev, irb);
 		return;
 	}
 	cdev->private->state = DEV_STATE_ONLINE;
-	if (irb->esw.esw0.erw.pvrf)
-		/* Try to start path verification. */
-		ccw_device_online_verify(cdev, 0);
 	/* Call the handler. */
-	ccw_device_call_handler(cdev);
-}
-
-static void
-ccw_device_w4sense_verify(struct ccw_device *cdev, enum dev_event dev_event)
-{
-	struct irb *irb;
-
-	irb = (struct irb *) __LC_IRB;
-	/* Check for unsolicited interrupt. */
-	if (irb->scsw.stctl ==
-	    		(SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)) {
-		if (cdev->handler)
-			cdev->handler (cdev, 0, irb);
-		return;
-	}
-	/* Add basic sense info to irb. */
-	ccw_device_accumulate_basic_sense(cdev, irb);
-	if (cdev->private->flags.dosense) {
-		/* Another basic sense is needed. */
-		ccw_device_do_sense(cdev, irb);
-		return;
-	}
-	cdev->private->state = DEV_STATE_ONLINE_VERIFY;
-	/* Start delayed device verification. */
+	if (ccw_device_call_handler(cdev) && cdev->private->flags.doverify)
+		/* Start delayed path verification. */
 		ccw_device_online_verify(cdev, 0);
-	/* Call the handler. */
-	ccw_device_call_handler(cdev);
 }
 
 static void
@@ -718,18 +665,6 @@ fsm_func_t *dev_jumptable[NR_DEV_STATES][NR_DEV_EVENTS] = {
 		[DEV_EVENT_VERIFY]	ccw_device_nop,
 	},
 	/* states to wait for i/o completion before doing something */
-	[DEV_STATE_ONLINE_VERIFY] {
-		[DEV_EVENT_NOTOPER]	ccw_device_online_notoper,
-		[DEV_EVENT_INTERRUPT]	ccw_device_irq_verify,
-		[DEV_EVENT_TIMEOUT]	ccw_device_nop,
-		[DEV_EVENT_VERIFY]	ccw_device_nop,
-	},
-	[DEV_STATE_W4SENSE_VERIFY] {
-		[DEV_EVENT_NOTOPER]	ccw_device_online_notoper,
-		[DEV_EVENT_INTERRUPT]	ccw_device_w4sense_verify,
-		[DEV_EVENT_TIMEOUT]	ccw_device_nop,
-		[DEV_EVENT_VERIFY]	ccw_device_nop,
-	},
 	[DEV_STATE_CLEAR_VERIFY] {
 		[DEV_EVENT_NOTOPER]     ccw_device_online_notoper,
 		[DEV_EVENT_INTERRUPT]   ccw_device_clear_verify,

drivers/s390/cio/device_id.c

@@ -342,3 +342,4 @@ ccw_device_sense_id_irq(struct ccw_device *cdev, enum dev_event dev_event)
 	}
 }
 
+EXPORT_SYMBOL(diag210);

drivers/s390/cio/device_status.c

@@ -67,7 +67,8 @@ ccw_device_path_notoper(struct ccw_device *cdev)
 		      sch->schib.pmcw.pnom);
 
 	sch->lpm &= ~sch->schib.pmcw.pnom;
-	dev_fsm_event(cdev, DEV_EVENT_VERIFY);
+	if (cdev->private->options.pgroup)
+		cdev->private->flags.doverify = 1;
 }
 
 /*
@@ -92,6 +93,21 @@ ccw_device_accumulate_ecw(struct ccw_device *cdev, struct irb *irb)
 	memcpy (&cdev->private->irb.ecw, irb->ecw, sizeof (irb->ecw));
 }
 
+/*
+ * Check if extended status word is valid.
+ */
+static inline int
+ccw_device_accumulate_esw_valid(struct irb *irb)
+{
+	if (irb->scsw.eswf && irb->scsw.stctl == SCSW_STCTL_STATUS_PEND)
+		return 0;
+	if (irb->scsw.stctl == 
+	    		(SCSW_STCTL_INTER_STATUS|SCSW_STCTL_STATUS_PEND) &&
+	    !(irb->scsw.actl & SCSW_ACTL_SUSPENDED))
+		return 0;
+	return 1;
+}
+
 /*
  * Copy valid bits from the extended status word to device irb.
  */
@@ -101,12 +117,7 @@ ccw_device_accumulate_esw(struct ccw_device *cdev, struct irb *irb)
 	struct irb *cdev_irb;
 	struct sublog *cdev_sublog, *sublog;
 
-	/* Check if extended status word is valid. */
-	if (irb->scsw.eswf && irb->scsw.stctl == SCSW_STCTL_STATUS_PEND)
-		return;
-	if (irb->scsw.stctl == 
-	    		(SCSW_STCTL_INTER_STATUS|SCSW_STCTL_STATUS_PEND) &&
-	    !(irb->scsw.actl & SCSW_ACTL_SUSPENDED))
+	if (!ccw_device_accumulate_esw_valid(irb))
 		return;
 
 	cdev_irb = &cdev->private->irb;
@@ -169,6 +180,8 @@ ccw_device_accumulate_esw(struct ccw_device *cdev, struct irb *irb)
 	cdev_irb->esw.esw0.erw.auth = irb->esw.esw0.erw.auth;
 	/* Copy path verification required flag. */
 	cdev_irb->esw.esw0.erw.pvrf = irb->esw.esw0.erw.pvrf;
+	if (irb->esw.esw0.erw.pvrf && cdev->private->options.pgroup)
+		cdev->private->flags.doverify = 1;
 	/* Copy concurrent sense bit. */
 	cdev_irb->esw.esw0.erw.cons = irb->esw.esw0.erw.cons;
 	if (irb->esw.esw0.erw.cons)
@@ -339,6 +352,10 @@ ccw_device_accumulate_basic_sense(struct ccw_device *cdev, struct irb *irb)
 		cdev->private->irb.esw.esw0.erw.cons = 1;
 		cdev->private->flags.dosense = 0;
 	}
+	/* Check if path verification is required. */
+	if (ccw_device_accumulate_esw_valid(irb) &&
+	    irb->esw.esw0.erw.pvrf && cdev->private->options.pgroup) 
+		cdev->private->flags.doverify = 1;
 }
 
 /*

drivers/s390/cio/qdio.h

 #ifndef _CIO_QDIO_H
 #define _CIO_QDIO_H
 
-#define VERSION_CIO_QDIO_H "$Revision: 1.18 $"
+#define VERSION_CIO_QDIO_H "$Revision: 1.20 $"
 
 //#define QDIO_DBF_LIKE_HELL
 
@@ -56,7 +56,6 @@
 #define QDIO_STATS_CLASSES 2
 #define QDIO_STATS_COUNT_NEEDED 2*/
 
-#define QDIO_NO_USE_COUNT_TIME 10
 #define QDIO_NO_USE_COUNT_TIMEOUT 1000 /* wait for 1 sec on each q before
 					  exiting without having use_count
 					  of the queue to 0 */
@@ -577,9 +576,6 @@ struct qdio_q {
 	volatile struct qdio_q *list_next;
 	volatile struct qdio_q *list_prev;
 
-	struct slib *slib; /* a page is allocated under this pointer,
-			      sl points into this page, offset PAGE_SIZE/2
-			      (after slib) */
 	struct sl *sl;
 	volatile struct sbal *sbal[QDIO_MAX_BUFFERS_PER_Q];
 
@@ -605,6 +601,11 @@ struct qdio_q {
 		__u64 last_transfer_time;
 	} timing;
         unsigned int queue_type;
+
+	/* leave this member at the end. won't be cleared in qdio_fill_qs */
+	struct slib *slib; /* a page is allocated under this pointer,
+			      sl points into this page, offset PAGE_SIZE/2
+			      (after slib) */
 } __attribute__ ((aligned(256)));
 
 struct qdio_irq {
@@ -619,20 +620,14 @@ struct qdio_irq {
 	unsigned int sync_done_on_outb_pcis;
 
 	enum qdio_irq_states state;
-	struct semaphore setting_up_sema;
 
 	unsigned int no_input_qs;
 	unsigned int no_output_qs;
 
 	unsigned char qdioac;
 
-	struct qdio_q *input_qs[QDIO_MAX_QUEUES_PER_IRQ];
-	struct qdio_q *output_qs[QDIO_MAX_QUEUES_PER_IRQ];
-
 	struct ccw1 ccw;
 
-	struct qdr *qdr;
-
 	struct ciw equeue;
 	struct ciw aqueue;
 
@@ -641,5 +636,10 @@ struct qdio_irq {
  	void (*original_int_handler) (struct ccw_device *,
  				      unsigned long, struct irb *);
 
+	/* leave these four members together at the end. won't be cleared in qdio_fill_irq */
+	struct qdr *qdr;
+	struct qdio_q *input_qs[QDIO_MAX_QUEUES_PER_IRQ];
+	struct qdio_q *output_qs[QDIO_MAX_QUEUES_PER_IRQ];
+	struct semaphore setting_up_sema;
 };
 #endif

drivers/s390/net/cu3088.c

 /*
- * $Id: cu3088.c,v 1.26 2003/01/17 13:46:13 cohuck Exp $
+ * $Id: cu3088.c,v 1.30 2003/08/28 11:14:11 cohuck Exp $
  *
  * CTC / LCS ccw_device driver
  *
@@ -56,7 +56,6 @@ static struct ccw_device_id cu3088_ids[] = {
 static struct ccw_driver cu3088_driver;
 
 struct device cu3088_root_dev = {
-	.name   = "CU3088 Devices",
 	.bus_id = "cu3088",
 };
 
@@ -64,7 +63,7 @@ static ssize_t
 group_write(struct device_driver *drv, const char *buf, size_t count)
 {
 	const char *start, *end;
-	char bus_ids[2][BUS_ID_SIZE+1], *argv[2];
+	char bus_ids[2][BUS_ID_SIZE], *argv[2];
 	int i;
 	int ret;
 	struct ccwgroup_driver *cdrv;
@@ -79,7 +78,7 @@ group_write(struct device_driver *drv, const char *buf, size_t count)
 
 		if (!(end = strchr(start, delim[i])))
 			return count;
-		len = min_t(ptrdiff_t, BUS_ID_SIZE, end - start)+1;
+		len = min_t(ptrdiff_t, BUS_ID_SIZE, end - start + 1);
 		strlcpy (bus_ids[i], start, len);
 		argv[i] = bus_ids[i];
 		start = end + 1;

include/asm-s390/qdio.h

@@ -76,7 +76,7 @@ typedef void qdio_handler_t(struct ccw_device *,unsigned int,unsigned int,
 #define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01
 #define QDIO_FLAG_CLEANUP_USING_HALT 0x02
 
-struct qdio_initialize{
+struct qdio_initialize {
 	struct ccw_device *cdev;
 	unsigned char q_format;
 	unsigned char adapter_name[8];
@@ -99,9 +99,10 @@ struct qdio_initialize{
 	void **input_sbal_addr_array; /* addr of n*128 void ptrs */
 	void **output_sbal_addr_array; /* addr of n*128 void ptrs */
 };
+
 extern int qdio_initialize(struct qdio_initialize *init_data);
 extern int qdio_allocate(struct qdio_initialize *init_data);
-extern int qdio_establish(struct ccw_device *);
+extern int qdio_establish(struct qdio_initialize *init_data);
 
 extern int qdio_activate(struct ccw_device *,int flags);