From: Cornelia Huck <cornelia.huck@de.ibm.com>
Date: Mon, 7 Aug 2006 15:00:30 +0000 (+0200)
Subject: [S390] retry after deferred condition code.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4bc0c4f9e74e7a5d62ef4db923b377f2aa474a8f;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[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 <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index a60124264be..9e3de0bd59b 100644
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -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;
+	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)) {