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RISC-V/perf: Use standard interface to get INTC domain 

Currently the PMU driver is using DT based lookup to
find the INTC node for sscofpmf extension. This will not work
for ACPI based systems causing the driver to fail to register
the PMU overflow interrupt handler.

Hence, change the code to use the standard interface to find
the INTC node which works irrespective of DT or ACPI.

Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Link: https://lore.kernel.org/r/20230607112417.782085-3-sunilvl@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Sunil V L 2023-06-07 16:54:17 +05:30 committed by Palmer Dabbelt
parent 3b426d4b5b
commit ca7473cb83
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GPG Key ID: 2E1319F35FBB1889
1 changed files with 2 additions and 15 deletions
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17
drivers/perf/riscv_pmu_sbi.c
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@ -739,7 +739,6 @@ static int pmu_sbi_setup_irqs(struct riscv_pmu *pmu, struct platform_device *pde
{
int ret;
struct cpu_hw_events __percpu *hw_events = pmu->hw_events;
struct device_node *cpu, *child;
struct irq_domain *domain = NULL;
if (riscv_isa_extension_available(NULL, SSCOFPMF)) {
@ -756,20 +755,8 @@ static int pmu_sbi_setup_irqs(struct riscv_pmu *pmu, struct platform_device *pde
if (!riscv_pmu_use_irq)
return -EOPNOTSUPP;
for_each_of_cpu_node(cpu) {
child = of_get_compatible_child(cpu, "riscv,cpu-intc");
if (!child) {
pr_err("Failed to find INTC node\n");
of_node_put(cpu);
return -ENODEV;
}
domain = irq_find_host(child);
of_node_put(child);
if (domain) {
of_node_put(cpu);
break;
}
}
domain = irq_find_matching_fwnode(riscv_get_intc_hwnode(),
DOMAIN_BUS_ANY);
if (!domain) {
pr_err("Failed to find INTC IRQ root domain\n");
return -ENODEV;