Upgrade and Migrate Reporting Services from SQL Server 2008 R2,Sharepoint 2010 to SQl Server 2012,Sharepoint 2013

 Hi ,

We are upgrading our sharepoint environment from 2010 to 2013, we have Report server installed in Sharepoint mode , we understand that we will need to upgrade our current report server installation from SQl server 2008 R2 to SQL server 2012 in order for it to work with Sharepoint 2013. I have gone through the following article http://msdn.microsoft.com/en-us/library/851a19a8-07ab-4d42-992f-1986c4c8df55 it covers all the other migration scenarios bu not this one can someone please suggest on migrating for following scenario.

SQL Server 2008 R2 to SQL Server 2012