s390/cio: collect format 1 channel-path description data
Collect format 1 channel-path description data for each CHPID
and update the information in one place.
Reviewed-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c
index 50ad5fd..21fabc6 100644
--- a/drivers/s390/cio/chp.c
+++ b/drivers/s390/cio/chp.c
@@ -377,6 +377,26 @@
}
/**
+ * chp_update_desc - update channel-path description
+ * @chp - channel-path
+ *
+ * Update the channel-path description of the specified channel-path.
+ * Return zero on success, non-zero otherwise.
+ */
+int chp_update_desc(struct channel_path *chp)
+{
+ int rc;
+
+ rc = chsc_determine_base_channel_path_desc(chp->chpid, &chp->desc);
+ if (rc)
+ return rc;
+
+ rc = chsc_determine_fmt1_channel_path_desc(chp->chpid, &chp->desc_fmt1);
+
+ return rc;
+}
+
+/**
* chp_new - register a new channel-path
* @chpid - channel-path ID
*
@@ -403,7 +423,7 @@
mutex_init(&chp->lock);
/* Obtain channel path description and fill it in. */
- ret = chsc_determine_base_channel_path_desc(chpid, &chp->desc);
+ ret = chp_update_desc(chp);
if (ret)
goto out_free;
if ((chp->desc.flags & 0x80) == 0) {