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Previously, CONFIG_LZ4_DECOMPRESS=y was selected by CONFIG_RD_LZ4 only. When building kernel for initramfs, CONFIG_RD_LZ4 will be unset by Kernel/SetInitramfs if the chosen compression method is not lz4, then CONFIG_LZ4_DECOMPRESS will become a *module* in the newly generated kernel config. However, the newly added module won't be built after 38c150612cc9be488527e342db92d5c74093213f, so packaging kmod-lib-lz4 fails due to missing lz4_decompress.ko. CONFIG_CRYPTO_LZ4=y makes CONFIG_LZ4_DECOMPRESS=y being selected w/o CONFIG_RD_LZ4, so that the modules of the default kernel and initramfs kernel are consistent. Fixes: #12766 Fixes: 38c150612cc ("build: revert 54070a1 (all kernels are >= 5.10)") Signed-off-by: Jitao Lu <dianlujitao@gmail.com> (cherry picked from commit cc87f6629b8a120420075cd984a4e6ece6c669df)