diff --git a/dtc-lexer.l b/dtc-lexer.l
index 35b39ca..487953c 100644
--- a/dtc-lexer.l
+++ b/dtc-lexer.l
@@ -38,6 +38,11 @@ LINECOMMENT	"//".*\n
 #include "srcpos.h"
 #include "dtc-parser.tab.h"
 
+#define	YY_USER_ACTION \
+	{ \
+		yylloc.file = srcpos_file; \
+		yylloc.first_line = yylineno; \
+	}
 
 /*#define LEXDEBUG	1*/
 
@@ -75,18 +80,13 @@ static int pop_input_file(void);
 		}
 
 <*>{STRING}	{
-			yylloc.file = srcpos_file;
-			yylloc.first_line = yylineno;
 			DPRINT("String: %s\n", yytext);
 			yylval.data = data_copy_escape_string(yytext+1,
 					yyleng-2);
-			yylloc.first_line = yylineno;
 			return DT_STRING;
 		}
 
 <*>"/dts-v1/"	{
-			yylloc.file = srcpos_file;
-			yylloc.first_line = yylineno;
 			DPRINT("Keyword: /dts-v1/\n");
 			dts_version = 1;
 			BEGIN_DEFAULT();
@@ -94,16 +94,12 @@ static int pop_input_file(void);
 		}
 
 <*>"/memreserve/"	{
-			yylloc.file = srcpos_file;
-			yylloc.first_line = yylineno;
 			DPRINT("Keyword: /memreserve/\n");
 			BEGIN_DEFAULT();
 			return DT_MEMRESERVE;
 		}
 
 <*>{LABEL}:	{
-			yylloc.file = srcpos_file;
-			yylloc.first_line = yylineno;
 			DPRINT("Label: %s\n", yytext);
 			yylval.labelref = xstrdup(yytext);
 			yylval.labelref[yyleng-1] = '\0';
@@ -111,8 +107,6 @@ static int pop_input_file(void);
 		}
 
 <INITIAL>[bodh]# {
-			yylloc.file = srcpos_file;
-			yylloc.first_line = yylineno;
 			if (*yytext == 'b')
 				yylval.cbase = 2;
 			else if (*yytext == 'o')
@@ -126,32 +120,24 @@ static int pop_input_file(void);
 		}
 
 <INITIAL>[0-9a-fA-F]+	{
-			yylloc.file = srcpos_file;
-			yylloc.first_line = yylineno;
 			yylval.literal = xstrdup(yytext);
 			DPRINT("Literal: '%s'\n", yylval.literal);
 			return DT_LEGACYLITERAL;
 		}
 
 <V1>[0-9]+|0[xX][0-9a-fA-F]+      {
-			yylloc.file = srcpos_file;
-			yylloc.first_line = yylineno;
 			yylval.literal = xstrdup(yytext);
 			DPRINT("Literal: '%s'\n", yylval.literal);
 			return DT_LITERAL;
 		}
 
 \&{LABEL}	{	/* label reference */
-			yylloc.file = srcpos_file;
-			yylloc.first_line = yylineno;
 			DPRINT("Ref: %s\n", yytext+1);
 			yylval.labelref = xstrdup(yytext+1);
 			return DT_REF;
 		}
 
 "&{/"{PATHCHAR}+\}	{	/* new-style path reference */
-			yylloc.file = srcpos_file;
-			yylloc.first_line = yylineno;
 			yytext[yyleng-1] = '\0';
 			DPRINT("Ref: %s\n", yytext+2);
 			yylval.labelref = xstrdup(yytext+2);
@@ -159,32 +145,24 @@ static int pop_input_file(void);
 		}
 
 <INITIAL>"&/"{PATHCHAR}+ {	/* old-style path reference */
-			yylloc.file = srcpos_file;
-			yylloc.first_line = yylineno;
 			DPRINT("Ref: %s\n", yytext+1);
 			yylval.labelref = xstrdup(yytext+1);
 			return DT_REF;
 		}
 
 <BYTESTRING>[0-9a-fA-F]{2} {
-			yylloc.file = srcpos_file;
-			yylloc.first_line = yylineno;
 			yylval.byte = strtol(yytext, NULL, 16);
 			DPRINT("Byte: %02x\n", (int)yylval.byte);
 			return DT_BYTE;
 		}
 
 <BYTESTRING>"]"	{
-			yylloc.file = srcpos_file;
-			yylloc.first_line = yylineno;
 			DPRINT("/BYTESTRING\n");
 			BEGIN_DEFAULT();
 			return ']';
 		}
 
 <PROPNODENAME>{PROPNODECHAR}+ {
-			yylloc.file = srcpos_file;
-			yylloc.first_line = yylineno;
 			DPRINT("PropNodeName: %s\n", yytext);
 			yylval.propnodename = xstrdup(yytext);
 			BEGIN_DEFAULT();
@@ -192,8 +170,6 @@ static int pop_input_file(void);
 		}
 
 "/incbin/"	{
-			yylloc.file = srcpos_file;
-			yylloc.first_line = yylineno;
 			DPRINT("Binary Include\n");
 			return DT_INCBIN;
 		}
@@ -203,8 +179,6 @@ static int pop_input_file(void);
 <*>{LINECOMMENT}+ /* eat C++-style comments */
 
 <*>.		{
-			yylloc.file = srcpos_file;
-			yylloc.first_line = yylineno;
 			DPRINT("Char: %c (\\x%02x)\n", yytext[0],
 				(unsigned)yytext[0]);
 			if (yytext[0] == '[') {