[RESEND][PATCH v2] register_console: prevent adding the same console twice

This patch guards the console_drivers list to be corrupted. The for_each_console() macro insist on a strictly forward list ended by NULL: con0-next-con1-next-NULL Without this patch it may happen easily to destroy this list for example by adding 'earlyprintk' twice, especially on embedded

Re: [RESEND][PATCH v2] register_console: prevent adding the same console twice

On Fri, Aug 02, 2013 at 12:23:34PM +0200, Andreas Bießmann wrote: This patch guards the console_drivers list to be corrupted. The for_each_console() macro insist on a strictly forward list ended by NULL: con0-next-con1-next-NULL Without this patch it may happen easily to destroy this list