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s390: retry after deferred condition code.

PATCH New Martin Schwidefsky 1 participant 1 message Aug 7, 2006

Subsystems (2)
s390 s390 common I/O layer
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Martin Schwidefsky

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PATCH 1/1 s390: retry after deferred condition code.

From: Cornelia Huck <[email protected]>

[S390] retry after deferred condition code.

Do a retry of read device characteristics / read configuration data when a deferred condition code 1 is encountered in ccw_device_wake_up().

Signed-off-by Cornelia Huck <[email protected]>
Signed-off-by Martin Schwidefsky <[email protected]>

---

 drivers/s390/cio/device_ops.c |    3 +++
 1 files changed, 3 insertions(+)
drivers/s390/cio/device_ops.c +3 -0
diff -urpN linux-2.6/drivers/s390/cio/device_ops.c linux-2.6-patched/drivers/s390/cio/device_ops.c
@@ -263,6 +263,9 @@ ccw_device_wake_up(struct ccw_device *cd
 	/* 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)) {