ieee1394: eth1394: clean up fragment_overlap
offset > fi->offset + fi->len - 1 == !(offset < fi->offset + fi->len)
offset + len - 1 < fi->offset == !(offset + len > fi->offset)
!(A || B) == (!A && !B)
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/ieee1394/eth1394.c b/drivers/ieee1394/eth1394.c
index 0047343..08f63c8 100644
--- a/drivers/ieee1394/eth1394.c
+++ b/drivers/ieee1394/eth1394.c
@@ -867,12 +867,12 @@
static int fragment_overlap(struct list_head *frag_list, int offset, int len)
{
struct fragment_info *fi;
+ int end = offset + len;
- list_for_each_entry(fi, frag_list, list) {
- if ( ! ((offset > (fi->offset + fi->len - 1)) ||
- ((offset + len - 1) < fi->offset)))
+ list_for_each_entry(fi, frag_list, list)
+ if (offset < fi->offset + fi->len && end > fi->offset)
return 1;
- }
+
return 0;
}