[PATCH 6/9] docs: kdoc: remove the KernelEntry::descr pseudo member

[Jonathan Corbet <corbet@lwn.net>]

The entry.descr value used in process_name() is not actually a member of
the KernelEntry class; it is a bit of local state.  So just manage it
locally.

A trim_whitespace() helper was added to clean up the code slightly.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
---
 scripts/lib/kdoc/kdoc_parser.py | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/scripts/lib/kdoc/kdoc_parser.py b/scripts/lib/kdoc/kdoc_parser.py
index 56299695abd1..7c635000f3de 100644
--- a/scripts/lib/kdoc/kdoc_parser.py
+++ b/scripts/lib/kdoc/kdoc_parser.py
@@ -60,6 +60,13 @@ export_symbol_ns = KernRe(r'^\s*EXPORT_SYMBOL_NS(_GPL)?\s*\(\s*(\w+)\s*,\s*"\S+"
 
 type_param = KernRe(r"\@(\w*((\.\w+)|(->\w+))*(\.\.\.)?)", cache=False)
 
+#
+# A little helper to get rid of excess white space
+#
+multi_space = KernRe(r'\s\s+')
+def trim_whitespace(s):
+    return multi_space.sub(' ', s.strip())
+
 class state:
     """
     State machine enums
@@ -1258,12 +1265,7 @@ class KernelDoc:
 
             r = KernRe("[-:](.*)")
             if r.search(line):
-                # strip leading/trailing/multiple spaces
-                self.entry.descr = r.group(1).strip(" ")
-
-                r = KernRe(r"\s+")
-                self.entry.descr = r.sub(" ", self.entry.descr)
-                self.entry.declaration_purpose = self.entry.descr
+                self.entry.declaration_purpose = trim_whitespace(r.group(1))
                 self.state = state.BODY_MAYBE
             else:
                 self.entry.declaration_purpose = ""
-- 
2.49.0