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| author |   Sebastian Ott <sebott@linux.vnet.ibm.com> | 2016-01-25 10:32:51 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-01-26 12:47:51 +0100 |
| commit | 9f3d6d7a40a178b8a5b5274f4e55fec8c30147c9 (patch) | |
| tree | 2cc02ea893e869749ef75d827680087803cc9ded /drivers/s390/cio/chp.c | |
| parent | s390/cio: ensure consistent measurement state (diff) | |
| download | linux-dev-9f3d6d7a40a178b8a5b5274f4e55fec8c30147c9.tar.xz linux-dev-9f3d6d7a40a178b8a5b5274f4e55fec8c30147c9.zip | |
s390/cio: update measurement characteristics
Per channel path measurement characteristics are obtained during channel
path registration. However if some properties of a channel path change
we don't update the measurement characteristics.
Make sure to update the characteristics when we change the properties of
a channel path or receive a notification from FW about such a change.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/chp.c')
| -rw-r--r-- | drivers/s390/cio/chp.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c index 8504629cbf72..50597f9522fe 100644 --- a/drivers/s390/cio/chp.c +++ b/drivers/s390/cio/chp.c @@ -416,7 +416,8 @@ static void chp_release(struct device *dev) * chp_update_desc - update channel-path description * @chp - channel-path * - * Update the channel-path description of the specified channel-path. + * Update the channel-path description of the specified channel-path + * including channel measurement related information. * Return zero on success, non-zero otherwise. */ int chp_update_desc(struct channel_path *chp) @@ -428,8 +429,10 @@ int chp_update_desc(struct channel_path *chp) return rc; rc = chsc_determine_fmt1_channel_path_desc(chp->chpid, &chp->desc_fmt1); + if (rc) + return rc; - return rc; + return chsc_get_channel_measurement_chars(chp); } /** @@ -466,11 +469,6 @@ int chp_new(struct chp_id chpid) ret = -ENODEV; goto out_free; } - - ret = chsc_get_channel_measurement_chars(chp); - if (ret) - goto out_free; - dev_set_name(&chp->dev, "chp%x.%02x", chpid.cssid, chpid.id); /* make it known to the system */ |