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Diffstat (limited to 'drivers/s390/cio/css.h')
-rw-r--r--drivers/s390/cio/css.h13
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index 2c9107e20251..c9f3fb39ebeb 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -113,8 +113,7 @@ extern int for_each_subchannel(int(*fn)(struct subchannel_id, void *), void *);
void css_update_ssd_info(struct subchannel *sch);
struct channel_subsystem {
- u8 cssid;
- int valid;
+ int cssid;
struct channel_path *chps[__MAX_CHPID + 1];
struct device device;
struct pgid global_pgid;
@@ -130,6 +129,16 @@ struct channel_subsystem {
extern struct channel_subsystem *channel_subsystems[];
+/* Dummy helper which needs to change once we support more than one css. */
+static inline struct channel_subsystem *css_by_id(u8 cssid)
+{
+ return channel_subsystems[0];
+}
+
+/* Dummy iterator which needs to change once we support more than one css. */
+#define for_each_css(css) \
+ for ((css) = channel_subsystems[0]; (css); (css) = NULL)
+
/* Helper functions to build lists for the slow path. */
void css_schedule_eval(struct subchannel_id schid);
void css_schedule_eval_all(void);