diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index b3d9179..e17a9ee 100644
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -403,6 +403,13 @@
 #endif
 }
 
+/*
+ * ide_fixstring() cleans up and (optionally) byte-swaps a text string,
+ * removing leading/trailing blanks and compressing internal blanks.
+ * It is primarily used to tidy up the model name/number fields as
+ * returned by the WIN_[P]IDENTIFY commands.
+ */
+
 void ide_fixstring (u8 *s, const int bytecount, const int byteswap)
 {
 	u8 *p = s, *end = &s[bytecount & ~1]; /* bytecount must be even */