[PATCH v3 0/2][request for stable inclusion] several pstore related bugfixs

[HuKeping <hukeping@huawei.com>]

Hi greg,
We want to use pstore on linux 3.10. But we found several bugfixs have not
been merged yet. Most of them are obvious and can be cherry-picked cleanly.
Would you please apply them to stable 3.10?

v1 -> v2:
 - remove d4bf205da618bbd0b038e404d646f14e76915718 which has already been merged
 - adjust 0405a5cec3406f19e69da07c8111a6bf1088ac29

v2 -> v3:
 - attach commit to pstore/ram: avoid atomic accesses for ioremapped regions

PART 1: patches that can be cleanly applied:

 bf2883339a33b7544b92ea465b90c3de55082032
 pstore: Fail to unlink if a driver has not defined pstore_erase
 
 c39524e6744284452ef45480d3153bec28960c32
 pstore: d_alloc_name() doesn't return an ERR_PTR
 
 57fd835385a043577457a385f28c08be693991bf
 pstore: clarify clearing of _read_cnt in ramoops_context
 
 aa9a4a1edfbd3d223af01db833da2f07850bc655
 pstore: skip zero size persistent ram buffer in traverse
 
 b0aa931fb84431394d995472d0af2a6c2b61064d
 pstore: Fix NULL pointer fault if get NULL prz in ramoops_get_next_prz
 
PART 2: pathes that should be adjusted:

 Rob Herring (1):
  pstore/ram: avoid atomic accesses for ioremapped regions

 fs/pstore/ram_core.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 52 insertions(+), 2 deletions(-)

 Madper Xie (1):
  efi-pstore: Make efi-pstore return a unique id

 drivers/firmware/efi/efi-pstore.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

-- 
1.8.5.5