Subject: oprofile: provide a default for /dev/oprofile/implementation

From: Kevin Corry <kevcorry@us.ibm.com>
Provide a default value for the /dev/oprofile/implementation file, since that
field is only initialized on i386.

Signed-off-by: Kevin Corry <kevcorry@us.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>

Index: linux-2.6/drivers/oprofile/oprofile_files.c
===================================================================
--- linux-2.6.orig/drivers/oprofile/oprofile_files.c
+++ linux-2.6/drivers/oprofile/oprofile_files.c
@@ -120,7 +120,11 @@ static const struct file_operations dump
 
 static ssize_t implementation(struct file * file, char __user * buf, size_t count, loff_t * offset)
 {
-	return oprofilefs_str_to_user(oprofile_ops.implementation, buf, count, offset);
+	char *str = oprofile_ops.implementation;
+	if (!str) {
+		str = "oprofile";
+	}
+	return oprofilefs_str_to_user(str, buf, count, offset);
 }