[PATCH v7] ARM: PJ4B: fix for 3.10-rc

[Nicolas Pitre]

On Fri, 21 Jun 2013, Gregory CLEMENT wrote:

> Hello,
> 
> This path allows to fix one errata for PJ4B CPUs.
> 
> Without this the Armada 370 based board can't boot anymore since
> 3.10-rc1. So this one really need to be applied on 3.10-rc.
> 
> Willy Tarreau have reported that with the last version the kernel
> crashed in !SMP. The problem was that all the pj4b cpu functions were
> defined in the __CPU_INIT section and in !SMP the code was removed
> from the memory once the kernel initialization done. In this version I
> fixed this issue by moving the code outside this section, and the
> kernel now boots in SMP and !SMP.
> 
> Nicolas, would you agree to give your acked-by on this new version
> before I sumbit it to Russell King's patch system?

Yes, you may add my ACK.


> 
> Thanks,
> 
> V1 -> V2;
>  - Fixed various coding style and typo issues
>  - Replaced the "mcr p15, 0, r0, c7, c10, 4" by  "dsb"
> 
> V2 -> v3:
>  - As suggested by Russell, the first errata is now applied
>    dynamically according to the processor type
> 
> v3 -> v4:
>  - Moved the glob_equ maco into proc-macro.S
>  - Split the patch in 2 parts, one for fixing the ID and mask of the
>    PJ4B and the second for fixing the errata itself
> 
> v4 -> v5:
> - Added #ifdef all the places the new symbols conditionally defined
>   are used.
> 
> v5 -> v6:
> - Selected the fix by default if MACH_ARMADA_370 is selected, as
>   without it there is no point to use Armada 370 base board.
> 
> v6 -> v7:
> - Move the pj4b cpu functions outside the CPU_INIT section
> 
> 
> Gregory CLEMENT (1):
>   ARM PJ4B: Add support for errata 4742
> 
>  arch/arm/Kconfig                 | 14 ++++++++++++++
>  arch/arm/include/asm/glue-proc.h |  9 +++++++++
>  arch/arm/mm/proc-macros.S        |  5 +++++
>  arch/arm/mm/proc-v7.S            | 34 +++++++++++++++++++++++++++++++---
>  4 files changed, 59 insertions(+), 3 deletions(-)
> 
> -- 
> 1.8.1.2
>