[PATCH 1/9] powerpc/powernv: Pass CPU-endian PE number to opal_pci_eeh_freeze_clear()

[Russell Currey]

On Tue, 2016-08-02 at 14:10 +1000, Gavin Shan wrote:
> The PE number (@frozen_pe_no), filled by opal_pci_next_error() is in
> big-endian format. It should be converted to CPU-dian before it is
> passed to opal_pci_eeh_freeze_clear() when clearing the frozen state
> if the PE is invalid one. As Michael Ellerman pointed out, the issue
> is also detected by sparse:
> 
>   gwshan at gwshan:~/sandbox/l$ make C=2 CF=-D__CHECK_ENDIAN__ \
>                     arch/powerpc/platforms/powernv/eeh-powernv.o
>       :
>   arch/powerpc/platforms/powernv/eeh-powernv.c:1541:41: \
>   warning: incorrect type in argument 2 (different base types)
>   arch/powerpc/platforms/powernv/eeh-powernv.c:1541:41: \
>   expected unsigned long long [unsigned] [usertype] pe_number
>   arch/powerpc/platforms/powernv/eeh-powernv.c:1541:41: \
>   got restricted __be64 [addressable] [usertype] frozen_pe_no
> 
> This passes CPU-endian PE number to opal_pci_eeh_freeze_clear() and
> it should be part of commit <0f36db77643b> ("powerpc/eeh: Fix wrong
> printed PE number"), which was merged to 4.3 kernel.
> 
> Fixes: 71b540adffd9 ("powerpc/powernv: Don't escalate non-existing frozen PE")
> Cc: stable at vger.kernel.org # v4.3+
> Suggested-by: Paul Mackerras <paulus at samba.org>
> Signed-off-by: Gavin Shan <gwshan at linux.vnet.ibm.com>
> ---

Reviewed-by: Russell Currey <ruscur at russell.cc>