[Skiboot] [PATCH] doc: clarify OPAL_RTC_READ return values

[Stewart Smith]

It's a quirky call. There was some discussion ages ago surrounding the
fact that we barely document what it returns and when. So, umm... make
it slightly less terrible, but still terrible.

Signed-off-by: Stewart Smith <stewart at linux.ibm.com>
---
 doc/opal-api/opal-rtc-read-3.rst | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/doc/opal-api/opal-rtc-read-3.rst b/doc/opal-api/opal-rtc-read-3.rst
index cb2387658fd5..f56cb2c96c5a 100644
--- a/doc/opal-api/opal-rtc-read-3.rst
+++ b/doc/opal-api/opal-rtc-read-3.rst
@@ -62,6 +62,10 @@ OPAL_PARAMETER
 
 OPAL_INTERNAL_ERROR
   something went wrong, Possibly reported in error log.
+  This can be a transient error
 
 OPAL_BUSY_EVENT
   request is in flight
+
+OPAL_BUSY
+  request may be in flight
-- 
2.20.0