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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

Message

Rob Herring 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

---
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(-)
---
base-commit: 40384c840ea1944d7c5a392e8975ed088ecf0b37
change-id: 20241211-syscon-fixes-9f35ecb9bfbe

Best regards,

Comments

Lee Jones Jan. 9, 2025, 11:12 a.m. UTC | #1
On Tue, 17 Dec 2024 12:11:39 -0600, Rob Herring (Arm) wrote:
> 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.
> 
> [...]

Applied, thanks!

[1/3] mfd: syscon: Fix race in device_node_get_regmap()
      commit: 805f7aaf7fee14a57b56af01d270edf6c10765e8
[2/3] mfd: syscon: Remove the platform driver support
      commit: 26769582bf353ae613f5113a1414ff3a80e08264
[3/3] mfd: syscon: Allow syscon nodes without a "syscon" compatible
      commit: ba5095ebbc7a83965ac049a50fa493d7c751f19b

--
Lee Jones [李琼斯]