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platform: cznic: turris-omnia-mcu: fix HW_RANDOM dependency

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There is still a build failure when the rwrng support is in a loadable
module but the mcu driver is built-in:

arm-linux-gnueabi-ld: drivers/platform/cznic/turris-omnia-mcu-trng.o: in function `omnia_mcu_register_trng':
turris-omnia-mcu-trng.c:(.text.omnia_mcu_register_trng+0x11c): undefined reference to `devm_hwrng_register'

Change the dependency to explicitly disallow the broken
configuration.

Fixes: 41bb142a40 ("platform: cznic: turris-omnia-mcu: Add support for MCU provided TRNG")
Reviewed-by: Marek Behún <kabel@kernel.org>
Link: https://lore.kernel.org/r/20240909110417.247453-1-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2024-09-09 11:04:09 +00:00
parent 2650fd8679
commit b97acde6f9
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1 changed files with 1 additions and 1 deletions
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2
drivers/platform/cznic/Kconfig
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@ -70,7 +70,7 @@ config TURRIS_OMNIA_MCU_TRNG
bool "Turris Omnia MCU true random number generator"
default y
depends on TURRIS_OMNIA_MCU_GPIO
depends on HW_RANDOM
depends on HW_RANDOM=y || HW_RANDOM=TURRIS_OMNIA_MCU
help
Say Y here to add support for the true random number generator
provided by CZ.NIC's Turris Omnia MCU.