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path: root/drivers/s390/cio/chp.h
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Diffstat (limited to 'drivers/s390/cio/chp.h')
-rw-r--r--drivers/s390/cio/chp.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/s390/cio/chp.h b/drivers/s390/cio/chp.h
index 695ec20..12b4903 100644
--- a/drivers/s390/cio/chp.h
+++ b/drivers/s390/cio/chp.h
@@ -52,6 +52,12 @@ struct channel_path {
void *cmg_chars;
};
+/* Return channel_path struct for given chpid. */
+static inline struct channel_path *chpid_to_chp(struct chp_id chpid)
+{
+ return channel_subsystems[chpid.cssid]->chps[chpid.id];
+}
+
int chp_get_status(struct chp_id chpid);
u8 chp_get_sch_opm(struct subchannel *sch);
int chp_is_registered(struct chp_id chpid);