From mboxrd@z Thu Jan  1 00:00:00 1970
From: will.deacon@arm.com (Will Deacon)
Date: Tue, 18 Sep 2012 11:04:39 +0100
Subject: ARM: hw_breakpoint: silent EPERM when setting ARM_DSCR_MDBGEN on
 ARM_DEBUG_ARCH_V7_ECP14
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On Fri, Sep 14, 2012 at 09:08:24AM +0100, Valentin Pistol wrote:
> Is there a reliable way to determine that they are locked down?
> Any particular register/bit I can check to confirm?

You can take a look at the DBGAUTHSTATUS register and try to determine the
signal values for SPNIDEN, DBGEN and NIDEN.

> > Completely untested patch below, please let me know how you get on...
> 
> Looks good, I'll give it a try.

Great. Let me know if it helps and, if so, I'll merge it.

Will