arm64/sysreg: Fix BWE field encoding in ID_AA64DFR2_EL1

Commit 93d7356e4b30 ("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: 93d7356e4b30 ("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>

diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index bc1788b1662b766132c1b0b8d3d31881902f6139..7cb61aca3797faa6722d55e1e59ebb4d8db1cb28 100644 (file)
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -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