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RISC-V: Fix of_node_* refcount

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Fix of_node* refcount at various places by using of_node_put.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
This commit is contained in:
Atish Patra 2018-11-20 15:07:50 -08:00 committed by Palmer Dabbelt
parent 8b699616f3
commit 94f9bf118f
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GPG Key ID: EF4CA1502CCBAB41
5 changed files with 20 additions and 1 deletions
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11
arch/riscv/kernel/cacheinfo.c
View File

@ -28,6 +28,7 @@ static int __init_cache_level(unsigned int cpu)
{
struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
struct device_node *np = of_cpu_device_node_get(cpu);
struct device_node *prev = NULL;
int levels = 0, leaves = 0, level;
if (of_property_read_bool(np, "cache-size"))
@ -39,7 +40,10 @@ static int __init_cache_level(unsigned int cpu)
if (leaves > 0)
levels = 1;
prev = np;
while ((np = of_find_next_cache_node(np))) {
of_node_put(prev);
prev = np;
if (!of_device_is_compatible(np, "cache"))
break;
if (of_property_read_u32(np, "cache-level", &level))
@ -55,8 +59,10 @@ static int __init_cache_level(unsigned int cpu)
levels = level;
}
of_node_put(np);
this_cpu_ci->num_levels = levels;
this_cpu_ci->num_leaves = leaves;
return 0;
}
@ -65,6 +71,7 @@ static int __populate_cache_leaves(unsigned int cpu)
struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
struct cacheinfo *this_leaf = this_cpu_ci->info_list;
struct device_node *np = of_cpu_device_node_get(cpu);
struct device_node *prev = NULL;
int levels = 1, level = 1;
if (of_property_read_bool(np, "cache-size"))
@ -74,7 +81,10 @@ static int __populate_cache_leaves(unsigned int cpu)
if (of_property_read_bool(np, "d-cache-size"))
ci_leaf_init(this_leaf++, np, CACHE_TYPE_DATA, level);
prev = np;
while ((np = of_find_next_cache_node(np))) {
of_node_put(prev);
prev = np;
if (!of_device_is_compatible(np, "cache"))
break;
if (of_property_read_u32(np, "cache-level", &level))
@ -89,6 +99,7 @@ static int __populate_cache_leaves(unsigned int cpu)
ci_leaf_init(this_leaf++, np, CACHE_TYPE_DATA, level);
levels = level;
}
of_node_put(np);
return 0;
}

1
arch/riscv/kernel/cpu.c
View File

@ -158,6 +158,7 @@ static int c_show(struct seq_file *m, void *v)
&& strcmp(compat, "riscv"))
seq_printf(m, "uarch\t\t: %s\n", compat);
seq_puts(m, "\n");
of_node_put(node);
return 0;
}

2
arch/riscv/kernel/cpufeature.c
View File

@ -56,8 +56,10 @@ void riscv_fill_hwcap(void)
if (of_property_read_string(node, "riscv,isa", &isa)) {
pr_warning("Unable to find \"riscv,isa\" devicetree entry");
of_node_put(node);
return;
}
of_node_put(node);
for (i = 0; i < strlen(isa); ++i)
elf_hwcap |= isa2hwcap[(unsigned char)(isa[i])];

1
arch/riscv/kernel/perf_event.c
View File

@ -476,6 +476,7 @@ int __init init_hw_perf_events(void)
if (of_id)
riscv_pmu = of_id->data;
of_node_put(node);
}
perf_pmu_register(riscv_pmu->pmu, "cpu", PERF_TYPE_RAW);

6
arch/riscv/kernel/smpboot.c
View File

@ -57,12 +57,15 @@ void __init setup_smp(void)
while ((dn = of_find_node_by_type(dn, "cpu"))) {
hart = riscv_of_processor_hartid(dn);
if (hart < 0)
if (hart < 0) {
of_node_put(dn);
continue;
}
if (hart == cpuid_to_hartid_map(0)) {
BUG_ON(found_boot_cpu);
found_boot_cpu = 1;
of_node_put(dn);
continue;
}
@ -70,6 +73,7 @@ void __init setup_smp(void)
set_cpu_possible(cpuid, true);
set_cpu_present(cpuid, true);
cpuid++;
of_node_put(dn);
}
BUG_ON(!found_boot_cpu);