[PATCH v6 0/3] Add spi-nor flash device pm support

[Kamal Dasu <kdasu.kdev@gmail.com>]

Changes since v5 based on review comments:

spi-nor.h
- Added flash state field
- Added spin_lock for flash state change 
- Added wait queue for synchronization of spi-nor ops between 
  mtd and spi-nor driver

spi-nor.c
- Added spi_nor_get/release_device() flash state syncronization functions
- Added mtd suspend and resume handlers

rerverted m25p80.c changes 

The V5 changes below implements power management support using the mtd
handlers for resume and suspend in the spi-nor driver. Implemented flash
state synchronization methods based on other mtd device drivers.
spi-nor mtd pm resume() calls newly implemented spi_nor_init() function
that sets up the spi-nor flash to its pre-suspend state. This is needed
on platfroms that turn off power to the spi-nor flash on pm suspend. 
The code has been rebased to git://github.com/spi-nor/linux.git next
branch.

Kamal Dasu (3):
  mtd: spi-nor: Add spi-nor init function
  mtd: spi-nor: Add spi-nor flash device synchronization between flash
    states
  mtd: spi-nor: Add spi-nor mtd suspend and resume handlers

 drivers/mtd/spi-nor/spi-nor.c | 170 +++++++++++++++++++++++++++++++++++-------
 include/linux/mtd/spi-nor.h   |  22 +++++-
 2 files changed, 164 insertions(+), 28 deletions(-)

-- 
1.9.1