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[v2,0/3] mfd: syscon: Cleanup, fix race condition and remove platform driver

Message ID 20241217-syscon-fixes-v2-0-4f56d750541d@kernel.org (mailing list archive)
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Series mfd: syscon: Cleanup, fix race condition and remove platform driver | expand

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Rob Herring (Arm) Dec. 17, 2024, 6:11 p.m. UTC 
Questions from Krzysztof and a syscon related binding review got me 
looking at the syscon "driver". This series is the result.

This short series drops the stale platform driver part of syscon 
support, fixes a race condition in device_node_get_regmap()
which is used by all the lookup functions, and allows for registering 
nodes without "syscon" compatibles.

Compile tested only. Testing on Tensor, the one user of 
of_syscon_register_regmap(), would be helpful.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
---
Changes in v2:
- Fix patch 3 logic when a syscon is found in list to not return an 
  error
- Add tags
- Link to v1: https://lore.kernel.org/r/20241211-syscon-fixes-v1-0-b5ac8c219e96@kernel.org

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Rob Herring (Arm) (3):
      mfd: syscon: Fix race in device_node_get_regmap()
      mfd: syscon: Remove the platform driver support
      mfd: syscon: Allow syscon nodes without a "syscon" compatible

 drivers/mfd/syscon.c                 | 95 ++++++------------------------------
 drivers/mfd/vexpress-sysreg.c        |  1 -
 include/linux/platform_data/syscon.h |  9 ----
 3 files changed, 15 insertions(+), 90 deletions(-)
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base-commit: 40384c840ea1944d7c5a392e8975ed088ecf0b37
change-id: 20241211-syscon-fixes-9f35ecb9bfbe

Best regards,