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perf: RISC-V: fix IRQ detection on T-Head C908 #2

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perf: RISC-V: fix IRQ detection on T-Head C908 #2

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4 changes: 0 additions & 4 deletions arch/riscv/errata/thead/errata.c
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Original file line number Diff line number Diff line change
Expand Up @@ -125,10 +125,6 @@ static bool errata_probe_pmu(unsigned int stage,
if (!IS_ENABLED(CONFIG_ERRATA_THEAD_PMU))
return false;

/* target-c9xx cores report arch_id and impid as 0 */
if (arch_id != 0 || impid != 0)
return false;

if (stage == RISCV_ALTERNATIVES_EARLY_BOOT)
return false;

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4 changes: 1 addition & 3 deletions drivers/perf/riscv_pmu_sbi.c
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Expand Up @@ -811,9 +811,7 @@ static int pmu_sbi_setup_irqs(struct riscv_pmu *pmu, struct platform_device *pde
riscv_pmu_irq_num = RV_IRQ_PMU;
riscv_pmu_use_irq = true;
} else if (IS_ENABLED(CONFIG_ERRATA_THEAD_PMU) &&
riscv_cached_mvendorid(0) == THEAD_VENDOR_ID &&
riscv_cached_marchid(0) == 0 &&
riscv_cached_mimpid(0) == 0) {
riscv_cached_mvendorid(0) == THEAD_VENDOR_ID) {
riscv_pmu_irq_num = THEAD_C9XX_RV_IRQ_PMU;
riscv_pmu_use_irq = true;
}
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