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irqchip: gic-v3: Use of_cpu_node_to_id helper

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Use the new generic helper of_cpu_node_to_id() instead
of using our own version to map a device node to logical CPU
number.

Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Suzuki K Poulose 2018-01-02 11:25:29 +00:00 committed by Will Deacon
parent 29198e3844
commit c08ec7da75
1 changed files with 2 additions and 27 deletions
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29
drivers/irqchip/irq-gic-v3.c
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@ -1070,31 +1070,6 @@ static int __init gic_validate_dist_version(void __iomem *dist_base)
return 0;
}
static int get_cpu_number(struct device_node *dn)
{
const __be32 *cell;
u64 hwid;
int cpu;
cell = of_get_property(dn, "reg", NULL);
if (!cell)
return -1;
hwid = of_read_number(cell, of_n_addr_cells(dn));
/*
* Non affinity bits must be set to 0 in the DT
*/
if (hwid & ~MPIDR_HWID_BITMASK)
return -1;
for_each_possible_cpu(cpu)
if (cpu_logical_map(cpu) == hwid)
return cpu;
return -1;
}
/* Create all possible partitions at boot time */
static void __init gic_populate_ppi_partitions(struct device_node *gic_node)
{
@ -1145,8 +1120,8 @@ static void __init gic_populate_ppi_partitions(struct device_node *gic_node)
if (WARN_ON(!cpu_node))
continue;
cpu = get_cpu_number(cpu_node);
if (WARN_ON(cpu == -1))
cpu = of_cpu_node_to_id(cpu_node);
if (WARN_ON(cpu < 0))
continue;
pr_cont("%pOF[%d] ", cpu_node, cpu);