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authorMichael Olbrich <m.olbrich@pengutronix.de>2016-10-04 16:15:37 +0200
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2016-10-04 16:15:37 +0200
commit5076f4219ee3f25a39e3520943270c2c915b03d1 (patch)
tree62dd523177ad99e013bfa407bf56584dd915607b /src/basic/list.h
parentc080fbce9ca4ac21d8dbb1c2d0e8c9205edfdbfb (diff)
list: LIST_INSERT_BEFORE: update head if necessary (#4261)
If the new item is inserted before the first item in the list, then the head must be updated as well. Add a test to the list unit test to check for this.
Diffstat (limited to 'src/basic/list.h')
-rw-r--r--src/basic/list.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/basic/list.h b/src/basic/list.h
index 5962aa4211..c3771a177f 100644
--- a/src/basic/list.h
+++ b/src/basic/list.h
@@ -142,6 +142,8 @@
} else { \
if ((_b->name##_prev = _a->name##_prev)) \
_b->name##_prev->name##_next = _b; \
+ else \
+ *_head = _b; \
_b->name##_next = _a; \
_a->name##_prev = _b; \
} \