Re: [PATCH] firmware_loader: rework crypto dependencies

From: Amadeusz Sławiński
Date: Fri Apr 14 2023 - 05:23:02 EST


On 4/14/2023 10:03 AM, Arnd Bergmann wrote:
From: Arnd Bergmann <arnd@xxxxxxxx>

The crypto dependencies for the firmwware loader are incomplete,
in particular a built-in FW_LOADER fails to link against a modular
crypto hash driver:

ld.lld: error: undefined symbol: crypto_alloc_shash
ld.lld: error: undefined symbol: crypto_shash_digest
ld.lld: error: undefined symbol: crypto_destroy_tfm
referenced by main.c
drivers/base/firmware_loader/main.o:(fw_log_firmware_info) in archive vmlinux.a

Rework this to use the usual 'select' from the driver module,
to respect the built-in vs module dependencies, and add a
more verbose crypto dependency to the debug option to prevent
configurations that lead to a link failure.

Fixes: 02fe26f25325 ("firmware_loader: Add debug message with checksum for FW file")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
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Tested on a few hundred randconfig builds
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When I thought I've tested all combinations... ;)

Thanks!

Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@xxxxxxxxxxxxxxx>