[RFC PATCH v0 1/2] powerpc, drmem: Fix unexpected flag value in ibm, dynamic-memory-v2

[Michael Ellerman]

Bharata B Rao <bharata at linux.vnet.ibm.com> writes:

> Memory addtion and removal by count and indexed-count methods
> temporarily mark the LMBs that are being added/removed by a special
> flag value DRMEM_LMB_RESERVED. Accessing flags value directly at
> a few places without proper accessor method is causing two unexpected
> side-effects:
>
> - DRMEM_LMB_RESERVED bit is becoming part of the flags word of
>   drconf_cell_v2 entries in ibm,dynamic-memory-v2 DT property.
> - This results in extra drconf_cell entries in ibm,dynamic-memory-v2.
>   For example if 1G memory is added, it leads to one entry for 3 LMBs
>   and 1 separate entry for the last LMB. All the 4 LMBs should be
>   defined by one entry here.
>
> Fix this by always accessing the flags by its accessor method
> drmem_lmb_flags().
>
> Signed-off-by: Bharata B Rao <bharata at linux.vnet.ibm.com>

Presumably:

  Fixes: 2b31e3aec1db ("powerpc/drmem: Add support for ibm, dynamic-memory-v2 property")

?

cheers