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arm64/sysreg: Fix BWE field encoding in ID_AA64DFR2_EL1

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Commit 93d7356e4b ("arm64: sysreg: Describe ID_AA64DFR2_EL1 fields")
encodes the FEAT_BWE2 value of the BWE field as '0b0002'. Binary
literals only accept the digits 0 and 1, so the intended value is 2,
i.e. 0b0010.

The macro generated by gen-sysreg.awk currently expands to
	#define ID_AA64DFR2_EL1_BWE_FEAT_BWE2 UL(0b0002)
is not legal C and would fail to compile if any in-tree code referenced
it. At present no caller uses this enum value, so the kernel still
builds cleanly, but the bug is latent.

Fix the typo by using the correct binary literal 0b0010.

Cc: Bin Guo <guobin@linux.alibaba.com>
Fixes: 93d7356e4b ("arm64: sysreg: Describe ID_AA64DFR2_EL1 fields")
Signed-off-by: Jia He <justin.he@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Oliver Upton <oupton@kernel.org>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Jia He
2026-06-30 22:23:47 +00:00
committed by Will Deacon
parent ff4c5a0de1
commit 6666336d8f
1 changed files with 1 additions and 1 deletions
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arch/arm64/tools/sysreg
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@@ -1806,7 +1806,7 @@ Res0 15:8
UnsignedEnum 7:4 BWE
0b0000 NI
0b0001 FEAT_BWE
0b0002 FEAT_BWE2
0b0010 FEAT_BWE2
EndEnum
UnsignedEnum 3:0 STEP
0b0000 NI