On 04/14/2020 10:31 PM, Will Deacon wrote:
There's no need to call id_aa64pfr0_32bit_el0() twice because the
sanitised value of ID_AA64PFR0_EL1 has already been updated for the CPU
being onlined.
Remove the redundant function call.
Signed-off-by: Will Deacon <will@xxxxxxxxxx>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
---
arch/arm64/kernel/cpufeature.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index 838fe5cc8d7e..7dfcdd9e75c1 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -792,9 +792,7 @@ void update_cpu_features(int cpu,
* If we have AArch32, we care about 32-bit features for compat.
* If the system doesn't support AArch32, don't update them.
*/
- if (id_aa64pfr0_32bit_el0(read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1)) &&
- id_aa64pfr0_32bit_el0(info->reg_id_aa64pfr0)) {
-
+ if (id_aa64pfr0_32bit_el0(read_sanitised_ftr_reg(SYS_ID_AA64PFR0_EL1))) {
taint |= check_update_ftr_reg(SYS_ID_DFR0_EL1, cpu,
info->reg_id_dfr0, boot->reg_id_dfr0);
taint |= check_update_ftr_reg(SYS_ID_ISAR0_EL1, cpu,
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