[PATCH] powerpc: Add strne2a() to convert a string from EBCDIC to ASCII

Add strne2a() which converts a string from EBCDIC to ASCII.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/lib/e2a.c

@@ -103,4 +103,14 @@ unsigned char e2a(unsigned char x)
 }
 EXPORT_SYMBOL(e2a);
 
+unsigned char* strne2a(unsigned char *dest, const unsigned char *src, size_t n)
+{
+	int i;
+
+	n = strnlen(src, n);
 
+	for (i = 0; i < n; i++)
+		dest[i] = e2a(src[i]);
+
+	return dest;
+}

include/asm-powerpc/system.h

@@ -171,6 +171,8 @@ extern u32 booke_wdt_period;
 
 /* EBCDIC -> ASCII conversion for [0-9A-Z] on iSeries */
 extern unsigned char e2a(unsigned char);
+extern unsigned char* strne2a(unsigned char *dest,
+		const unsigned char *src, size_t n);
 
 struct device_node;
 extern void note_scsi_host(struct device_node *, void *);