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[v3,06/17] riscv: Fix extension subset checking

Message ID 20240420-dev-charlie-support_thead_vector_6_9-v3-6-67cff4271d1d@rivosinc.com
State Accepted
Commit e67e98ee8952c7d5ce986d1dc6f8221ab8674afa
Headers show
Series riscv: Support vendor extensions and xtheadvector | expand

Commit Message

Charlie Jenkins April 21, 2024, 1:04 a.m. UTC 
This loop is supposed to check if ext->subset_ext_ids[j] is valid, rather
than if ext->subset_ext_ids[i] is valid, before setting the extension
id ext->subset_ext_ids[j] in isainfo->isa.

Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Fixes: 0d8295ed975b ("riscv: add ISA extension parsing for scalar crypto")
---
 arch/riscv/kernel/cpufeature.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index 48874aac4871..b537731cadef 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -609,7 +609,7 @@  static int __init riscv_fill_hwcap_from_ext_list(unsigned long *isa2hwcap)
 
 			if (ext->subset_ext_size) {
 				for (int j = 0; j < ext->subset_ext_size; j++) {
-					if (riscv_isa_extension_check(ext->subset_ext_ids[i]))
+					if (riscv_isa_extension_check(ext->subset_ext_ids[j]))
 						set_bit(ext->subset_ext_ids[j], isainfo->isa);
 				}
 			}