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regmap: REGMAP_KUNIT should not select REGMAP

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Enabling a (modular) test should not silently enable additional kernel
functionality, as that may increase the attack vector of a product.

Fix this by:
  1. making REGMAP visible if CONFIG_KUNIT_ALL_TESTS is enabled,
  2. making REGMAP_KUNIT depend on REGMAP instead of selecting it.

After this, one can safely enable CONFIG_KUNIT_ALL_TESTS=m to build
modules for all appropriate tests for ones system, without pulling in
extra unwanted functionality, while still allowing a tester to manually
enable REGMAP and its test suite on a system where REGMAP is not enabled
by default.

Fixes: 2238959b6ad27040 ("regmap: Add some basic kunit tests")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org
Link: https://lore.kernel.org/r/b0a5dbb17c1d5ea482e052e585ae83bb69c48806.1682516005.git.geert@linux-m68k.org
Signed-off-by: Mark Brown <broonie@kernel.org
This commit is contained in:
Geert Uytterhoeven 2023-04-26 15:35:45 +02:00 committed by Mark Brown
parent ac9a78681b
commit 70a640c0ef
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1 changed files with 10 additions and 3 deletions
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13
drivers/base/regmap/Kconfig
View File

@ -4,16 +4,23 @@
# subsystems should select the appropriate symbols.
config REGMAP
bool "Register Map support" if KUNIT_ALL_TESTS
default y if (REGMAP_I2C || REGMAP_SPI || REGMAP_SPMI || REGMAP_W1 || REGMAP_AC97 || REGMAP_MMIO || REGMAP_IRQ || REGMAP_SOUNDWIRE || REGMAP_SOUNDWIRE_MBQ || REGMAP_SCCB || REGMAP_I3C || REGMAP_SPI_AVMM || REGMAP_MDIO || REGMAP_FSI)
select IRQ_DOMAIN if REGMAP_IRQ
select MDIO_BUS if REGMAP_MDIO
bool
help
Enable support for the Register Map (regmap) access API.
Usually, this option is automatically selected when needed.
However, you may want to enable it manually for running the regmap
KUnit tests.
If unsure, say N.
config REGMAP_KUNIT
tristate "KUnit tests for regmap"
depends on KUNIT
depends on KUNIT && REGMAP
default KUNIT_ALL_TESTS
select REGMAP
select REGMAP_RAM
config REGMAP_AC97