[PATCH v4 0/3] regcache: Avoid accessing non-initialised cache

From: Andy Shevchenko

Date: Mon Mar 02 2026 - 04:59:46 EST


Refactor regcache flow that populates cache on initialisation phase
based on the values in HW. This makes code robust against any possible
accesses to not-fully initialised caches.

Changelog v4:
- made conditional against 'count' to make it less dependent to the previous code path

v3: 20260226135918.381979-1-andriy.shevchenko@xxxxxxxxxxxxxxx

Changelog v3:
- dropped unneeded churn in patch 3 (Mark)
- fixed code to pass kunit test cases (Mark)

v2: 20260225161659.3811671-1-andriy.shevchenko@xxxxxxxxxxxxxxx

Changelog v2:
- rebased on top of the latest regmap changes (Mark)
- added two more little cleanups (patches 4 & 5)

Andy Shevchenko (3):
regcache: Move HW readback after cache initialisation
regcache: Define iterator inside for-loop and align their types
regcache: Amend printf() specifiers when printing registers

drivers/base/regmap/internal.h | 2 +-
drivers/base/regmap/regcache.c | 42 ++++++++++++++++++++--------------
2 files changed, 26 insertions(+), 18 deletions(-)

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2.50.1