[PATCH] arm64: Kconfig: remove unnecessary selection of CRC32

From: Eric Biggers
Date: Mon Apr 14 2025 - 13:41:51 EST


From: Eric Biggers <ebiggers@xxxxxxxxxx>

The selection of CRC32 by ARM64 was added by commit 7481cddf29ed
("arm64/lib: add accelerated crc32 routines") as a workaround for the
fact that, at the time, the CRC32 library functions used weak symbols to
allow architecture-specific overrides. That only worked when CRC32 was
built-in, and thus ARM64 was made to just force CRC32 to built-in.

Now that the CRC32 library no longer uses weak symbols, that no longer
applies. And the selection does not fulfill a user dependency either;
those all have their own selections from other options. Therefore, the
selection of CRC32 by ARM64 is no longer necessary. Remove it.

Note that this does not necessarily result in CRC32 no longer being set
to y, as it still tends to get selected by something else anyway.

Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx>
---

Please consider taking this through the arm64 tree. But if it doesn't
get picked up there, I'll take it through the crc tree.

arch/arm64/Kconfig | 1 -
1 file changed, 1 deletion(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index a182295e6f08..14073b0094c1 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -132,11 +132,10 @@ config ARM64
select BUILDTIME_TABLE_SORT
select CLONE_BACKWARDS
select COMMON_CLK
select CPU_PM if (SUSPEND || CPU_IDLE)
select CPUMASK_OFFSTACK if NR_CPUS > 256
- select CRC32
select DCACHE_WORD_ACCESS
select DYNAMIC_FTRACE if FUNCTION_TRACER
select DMA_BOUNCE_UNALIGNED_KMALLOC
select DMA_DIRECT_REMAP
select EDAC_SUPPORT

base-commit: 8ffd015db85fea3e15a77027fda6c02ced4d2444
--
2.49.0