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Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[pandora-kernel.git]
/
drivers
/
s390
/
cio
/
device_ops.c
diff --git
a/drivers/s390/cio/device_ops.c
b/drivers/s390/cio/device_ops.c
index
795abb5
..
9e3de0b
100644
(file)
--- a/
drivers/s390/cio/device_ops.c
+++ b/
drivers/s390/cio/device_ops.c
@@
-6,7
+6,6
@@
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
* Cornelia Huck (cornelia.huck@de.ibm.com)
*/
* Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
* Cornelia Huck (cornelia.huck@de.ibm.com)
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/errno.h>
@@
-78,7
+77,8
@@
ccw_device_start_key(struct ccw_device *cdev, struct ccw1 *cpa,
return -ENODEV;
if (cdev->private->state == DEV_STATE_NOT_OPER)
return -ENODEV;
return -ENODEV;
if (cdev->private->state == DEV_STATE_NOT_OPER)
return -ENODEV;
- if (cdev->private->state == DEV_STATE_VERIFY) {
+ if (cdev->private->state == DEV_STATE_VERIFY ||
+ cdev->private->state == DEV_STATE_CLEAR_VERIFY) {
/* Remember to fake irb when finished. */
if (!cdev->private->flags.fake_irb) {
cdev->private->flags.fake_irb = 1;
/* Remember to fake irb when finished. */
if (!cdev->private->flags.fake_irb) {
cdev->private->flags.fake_irb = 1;
@@
-263,6
+263,9
@@
ccw_device_wake_up(struct ccw_device *cdev, unsigned long ip, struct irb *irb)
/* Abuse intparm for error reporting. */
if (IS_ERR(irb))
cdev->private->intparm = -EIO;
/* Abuse intparm for error reporting. */
if (IS_ERR(irb))
cdev->private->intparm = -EIO;
+ else if (irb->scsw.cc == 1)
+ /* Retry for deferred condition code. */
+ cdev->private->intparm = -EAGAIN;
else if ((irb->scsw.dstat !=
(DEV_STAT_CHN_END|DEV_STAT_DEV_END)) ||
(irb->scsw.cstat != 0)) {
else if ((irb->scsw.dstat !=
(DEV_STAT_CHN_END|DEV_STAT_DEV_END)) ||
(irb->scsw.cstat != 0)) {
@@
-270,7
+273,8
@@
ccw_device_wake_up(struct ccw_device *cdev, unsigned long ip, struct irb *irb)
* We didn't get channel end / device end. Check if path
* verification has been started; we can retry after it has
* finished. We also retry unit checks except for command reject
* We didn't get channel end / device end. Check if path
* verification has been started; we can retry after it has
* finished. We also retry unit checks except for command reject
- * or intervention required.
+ * or intervention required. Also check for long busy
+ * conditions.
*/
if (cdev->private->flags.doverify ||
cdev->private->state == DEV_STATE_VERIFY)
*/
if (cdev->private->flags.doverify ||
cdev->private->state == DEV_STATE_VERIFY)
@@
-279,6
+283,10
@@
ccw_device_wake_up(struct ccw_device *cdev, unsigned long ip, struct irb *irb)
!(irb->ecw[0] &
(SNS0_CMD_REJECT | SNS0_INTERVENTION_REQ)))
cdev->private->intparm = -EAGAIN;
!(irb->ecw[0] &
(SNS0_CMD_REJECT | SNS0_INTERVENTION_REQ)))
cdev->private->intparm = -EAGAIN;
+ else if ((irb->scsw.dstat & DEV_STAT_ATTENTION) &&
+ (irb->scsw.dstat & DEV_STAT_DEV_END) &&
+ (irb->scsw.dstat & DEV_STAT_UNIT_EXCEP))
+ cdev->private->intparm = -EAGAIN;
else
cdev->private->intparm = -EIO;
else
cdev->private->intparm = -EIO;