diff options
Diffstat (limited to 'drivers/s390/cio/device_pgid.c')
| -rw-r--r-- | drivers/s390/cio/device_pgid.c | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/drivers/s390/cio/device_pgid.c b/drivers/s390/cio/device_pgid.c index ce493144b054..3323042ba755 100644 --- a/drivers/s390/cio/device_pgid.c +++ b/drivers/s390/cio/device_pgid.c @@ -30,8 +30,8 @@ static void verify_done(struct ccw_device *cdev, int rc) { struct subchannel *sch = to_subchannel(cdev->dev.parent); struct ccw_dev_id *id = &cdev->private->dev_id; - int mpath = !cdev->private->flags.pgid_single; - int pgroup = cdev->private->options.pgroup; + int mpath = cdev->private->flags.mpath; + int pgroup = cdev->private->flags.pgroup; if (rc) goto out; @@ -150,7 +150,7 @@ static void spid_do(struct ccw_device *cdev) fn = SPID_FUNC_ESTABLISH; else fn = SPID_FUNC_RESIGN; - if (!cdev->private->flags.pgid_single) + if (cdev->private->flags.mpath) fn |= SPID_FUNC_MULTI_PATH; spid_build_cp(cdev, fn); ccw_request_start(cdev); @@ -177,13 +177,13 @@ static void spid_callback(struct ccw_device *cdev, void *data, int rc) case -EACCES: break; case -EOPNOTSUPP: - if (!cdev->private->flags.pgid_single) { + if (cdev->private->flags.mpath) { /* Try without multipathing. */ - cdev->private->flags.pgid_single = 1; + cdev->private->flags.mpath = 0; goto out_restart; } /* Try without pathgrouping. */ - cdev->private->options.pgroup = 0; + cdev->private->flags.pgroup = 0; goto out_restart; default: goto err; @@ -374,7 +374,7 @@ static void verify_start(struct ccw_device *cdev) req->timeout = PGID_TIMEOUT; req->maxretries = PGID_RETRIES; req->lpm = 0x80; - if (cdev->private->options.pgroup) { + if (cdev->private->flags.pgroup) { req->callback = spid_callback; spid_do(cdev); } else { @@ -400,10 +400,17 @@ void ccw_device_verify_start(struct ccw_device *cdev) CIO_HEX_EVENT(4, &cdev->private->dev_id, sizeof(cdev->private->dev_id)); if (!cdev->private->flags.pgid_rdy) { /* No pathgrouping possible. */ - cdev->private->options.pgroup = 0; - cdev->private->flags.pgid_single = 1; - } else - cdev->private->flags.pgid_single = 0; + cdev->private->flags.pgroup = 0; + cdev->private->flags.mpath = 0; + } else { + /* + * Initialize pathgroup and multipath state with target values. + * They may change in the course of path verification. + */ + cdev->private->flags.pgroup = cdev->private->options.pgroup; + cdev->private->flags.mpath = cdev->private->options.mpath; + + } cdev->private->flags.doverify = 0; verify_start(cdev); } @@ -419,7 +426,7 @@ static void disband_callback(struct ccw_device *cdev, void *data, int rc) if (rc) goto out; /* Ensure consistent multipathing state at device and channel. */ - cdev->private->flags.pgid_single = 1; + cdev->private->flags.mpath = 0; if (sch->config.mp) { sch->config.mp = 0; rc = cio_commit_config(sch); @@ -453,7 +460,7 @@ void ccw_device_disband_start(struct ccw_device *cdev) req->lpm = sch->schib.pmcw.pam & sch->opm; req->callback = disband_callback; fn = SPID_FUNC_DISBAND; - if (!cdev->private->flags.pgid_single) + if (cdev->private->flags.mpath) fn |= SPID_FUNC_MULTI_PATH; spid_build_cp(cdev, fn); ccw_request_start(cdev); |