From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
linux-kernel@vger.kernel.org, driver-core@lists.linux.dev
Cc: Mark Brown <broonie@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Danilo Krummrich <dakr@kernel.org>
Subject: [PATCH v6 0/3] regcache: Avoid accessing non-initialised cache
Date: Thu, 5 Mar 2026 09:52:59 +0100 [thread overview]
Message-ID: <20260305085449.3184020-1-andriy.shevchenko@linux.intel.com> (raw)
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 v6:
- refactored to make sure we always clean up the allocated resources (Mark)
- dropped applied patches
v5: 20260303092820.2818138-1-andriy.shevchenko@linux.intel.com
Changelog v5:
- added a precursor patch to make things clearer
- also put the freeing resources into an order (Mark)
- dropped applied patches
v4: 20260302095847.2310066-1-andriy.shevchenko@linux.intel.com
Changelog v4:
- made conditional against 'count' to make it less dependent to the previous code path
v3: 20260226135918.381979-1-andriy.shevchenko@linux.intel.com
Changelog v3:
- dropped unneeded churn in patch 3 (Mark)
- fixed code to pass kunit test cases (Mark)
v2: 20260225161659.3811671-1-andriy.shevchenko@linux.intel.com
Changelog v2:
- rebased on top of the latest regmap changes (Mark)
- added two more little cleanups (patches 4 & 5)
Andy Shevchenko (3):
regcache: Move count check and cache_bypass assignment to the caller
regcache: Allocate and free reg_defaults on the same level
regcache: Move HW readback after cache initialisation
drivers/base/regmap/regcache.c | 63 +++++++++++++++++-----------------
1 file changed, 31 insertions(+), 32 deletions(-)
--
2.50.1
next reply other threads:[~2026-03-05 8:54 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-05 8:52 Andy Shevchenko [this message]
2026-03-05 8:53 ` [PATCH v6 1/3] regcache: Move count check and cache_bypass assignment to the caller Andy Shevchenko
2026-03-05 8:53 ` [PATCH v6 2/3] regcache: Allocate and free reg_defaults on the same level Andy Shevchenko
2026-03-05 8:53 ` [PATCH v6 3/3] regcache: Move HW readback after cache initialisation Andy Shevchenko
2026-03-05 21:14 ` [PATCH v6 0/3] regcache: Avoid accessing non-initialised cache Mark Brown
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