X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fs390%2Fcio%2Fdevice_ops.c;h=5c9904b418e1244c71c10d82945857859b0f46dd;hb=da039bd1e872b89e1c92c6c891c43b96d0a1bc41;hp=85a3026e6900a37c001d5ba48fa63ef63b27643e;hpb=a9931a6e37c09f6b76a9fa0cbd777c335548692b;p=linux-2.6

diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index 85a3026e69..5c9904b418 100644
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -1,12 +1,10 @@
 /*
  *  drivers/s390/cio/device_ops.c
  *
- *   $Revision: 1.57 $
- *
  *    Copyright (C) 2002 IBM Deutschland Entwicklung GmbH,
  *			 IBM Corporation
  *    Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
- *               Cornelia Huck (cohuck@de.ibm.com)
+ *               Cornelia Huck (cornelia.huck@de.ibm.com)
  */
 #include <linux/config.h>
 #include <linux/module.h>
@@ -272,7 +270,8 @@ 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
-		 * or intervention required.
+		 * or intervention required. Also check for long busy
+		 * conditions.
 		 */
 		 if (cdev->private->flags.doverify ||
 			 cdev->private->state == DEV_STATE_VERIFY)
@@ -281,6 +280,10 @@ 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;
+		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;
 			 
@@ -361,10 +364,9 @@ read_dev_chars (struct ccw_device *cdev, void **buffer, int length)
 	CIO_TRACE_EVENT (4, "rddevch");
 	CIO_TRACE_EVENT (4, sch->dev.bus_id);
 
-	rdc_ccw = kmalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA);
+	rdc_ccw = kzalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA);
 	if (!rdc_ccw)
 		return -ENOMEM;
-	memset(rdc_ccw, 0, sizeof(struct ccw1));
 	rdc_ccw->cmd_code = CCW_CMD_RDC;
 	rdc_ccw->count = length;
 	rdc_ccw->flags = CCW_FLAG_SLI;
@@ -428,16 +430,14 @@ read_conf_data_lpm (struct ccw_device *cdev, void **buffer, int *length, __u8 lp
 	if (!ciw || ciw->cmd == 0)
 		return -EOPNOTSUPP;
 
-	rcd_ccw = kmalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA);
+	rcd_ccw = kzalloc(sizeof(struct ccw1), GFP_KERNEL | GFP_DMA);
 	if (!rcd_ccw)
 		return -ENOMEM;
-	memset(rcd_ccw, 0, sizeof(struct ccw1));
-	rcd_buf = kmalloc(ciw->count, GFP_KERNEL | GFP_DMA);
+	rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
  	if (!rcd_buf) {
 		kfree(rcd_ccw);
 		return -ENOMEM;
 	}
- 	memset (rcd_buf, 0, ciw->count);
 	rcd_ccw->cmd_code = ciw->cmd;
 	rcd_ccw->cda = (__u32) __pa (rcd_buf);
 	rcd_ccw->count = ciw->count;
@@ -570,7 +570,7 @@ ccw_device_get_chp_desc(struct ccw_device *cdev, int chp_no)
 int
 _ccw_device_get_subchannel_number(struct ccw_device *cdev)
 {
-	return cdev->private->irq;
+	return cdev->private->sch_no;
 }
 
 int