[RFC,0/3] Add prepare/unprepare method in spi_controller_mem_ops

Message

Yicong Yang May 21, 2020, 11:23 a.m. UTC

In this series:
- Add optional prepare/unprepare methods in spi_controller_mem_ops to allow
  the controller do specific works before/after a set of operations, like
  spi-nor flash's read/write/erase/lock/unlock. This is equivalent mechanism
  to spi_nor_controller_ops' prepare/unprepare methods.
- Implement prepare/unprepare methods for hisi-sfc-v3xx controller. This will
  solve a race condition between the kernel driver and firmware.

Yicong Yang (3):
  spi: spi-mem: add optional prepare/unprepare methods in
    spi_controller_mem_ops
  mtd: spi-nor: Add prepare/unprepare support for spimem device
  spi: hisi-sfc-v3xx: Add prepare/unprepare methods to avoid race
    condition

 drivers/mtd/spi-nor/core.c      |  8 ++++++--
 drivers/spi/spi-hisi-sfc-v3xx.c | 41 ++++++++++++++++++++++++++++++++++++++++-
 drivers/spi/spi-mem.c           | 20 ++++++++++++++++++++
 include/linux/spi/spi-mem.h     | 11 +++++++++++
 4 files changed, 77 insertions(+), 3 deletions(-)