From: Cornelia Huck Date: Thu, 17 Apr 2008 05:46:00 +0000 (+0200) Subject: [S390] cio: Trigger verification on device/path not operational. X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=fe6173d9b33dba18ec462051750fb1b9abcd796d;p=linux-beck.git [S390] cio: Trigger verification on device/path not operational. Currently, we don't do much on no path or no device situations during normal user I/O, since we rely on reports regarding those events by the machine. If we trigger a path verification to bring our device state up-to-date, we (a) may recover from path failures earlier and (b) better handle situations where the hardware/hypervisor doesn't give us enough notifications. Signed-off-by: Cornelia Huck Signed-off-by: Martin Schwidefsky Signed-off-by: Heiko Carstens --- diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c index 49b58eb0fab8..a1718a0aa539 100644 --- a/drivers/s390/cio/device_ops.c +++ b/drivers/s390/cio/device_ops.c @@ -193,8 +193,15 @@ int ccw_device_start_key(struct ccw_device *cdev, struct ccw1 *cpa, return -EACCES; } ret = cio_start_key (sch, cpa, lpm, key); - if (ret == 0) + switch (ret) { + case 0: cdev->private->intparm = intparm; + break; + case -EACCES: + case -ENODEV: + dev_fsm_event(cdev, DEV_EVENT_VERIFY); + break; + } return ret; } diff --git a/drivers/s390/cio/device_status.c b/drivers/s390/cio/device_status.c index ebe0848cfe33..4764b9e00b9e 100644 --- a/drivers/s390/cio/device_status.c +++ b/drivers/s390/cio/device_status.c @@ -312,6 +312,7 @@ ccw_device_do_sense(struct ccw_device *cdev, struct irb *irb) { struct subchannel *sch; struct ccw1 *sense_ccw; + int rc; sch = to_subchannel(cdev->dev.parent); @@ -337,7 +338,10 @@ ccw_device_do_sense(struct ccw_device *cdev, struct irb *irb) /* Reset internal retry indication. */ cdev->private->flags.intretry = 0; - return cio_start(sch, sense_ccw, 0xff); + rc = cio_start(sch, sense_ccw, 0xff); + if (rc == -ENODEV || rc == -EACCES) + dev_fsm_event(cdev, DEV_EVENT_VERIFY); + return rc; } /*