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| author | Hanjun Guo <hanjun.guo@linaro.org> | 2015-03-27 12:14:36 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2015-03-31 16:31:00 +0100 |
| commit | 7676fa70feb2f3bcdd4b854a553a57d8ef8505aa (patch) | |
| tree | 3f4dcfc5066eb0038282e6c09354f57170e07d28 /arch/arm64 | |
| parent | ec81ad4eca9736bb73d4458fb7d8a5ccaf3e908e (diff) | |
| download | linux-7676fa70feb2f3bcdd4b854a553a57d8ef8505aa.tar.gz linux-7676fa70feb2f3bcdd4b854a553a57d8ef8505aa.tar.bz2 linux-7676fa70feb2f3bcdd4b854a553a57d8ef8505aa.zip | |
ARM64 / ACPI: make acpi_map_gic_cpu_interface() as void function
Since the only caller of acpi_parse_gic_cpu_interface() doesn't
need the return value, make it have a void return type to avoid
introducing subtle bugs, and update the comments of the function
accordingly.
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kernel/acpi.c | 23 |
1 files changed, 9 insertions, 14 deletions
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c index c263cbaa6484..8b839558838e 100644 --- a/arch/arm64/kernel/acpi.c +++ b/arch/arm64/kernel/acpi.c @@ -98,12 +98,8 @@ void __init __acpi_unmap_table(char *map, unsigned long size) /** * acpi_map_gic_cpu_interface - generates a logical cpu number * and map to MPIDR represented by GICC structure - * @mpidr: CPU's hardware id to register, MPIDR represented in MADT - * @enabled: this cpu is enabled or not - * - * Returns the logical cpu number which maps to MPIDR */ -static int __init +static void __init acpi_map_gic_cpu_interface(struct acpi_madt_generic_interrupt *processor) { int i; @@ -112,17 +108,17 @@ acpi_map_gic_cpu_interface(struct acpi_madt_generic_interrupt *processor) if (mpidr == INVALID_HWID) { pr_info("Skip MADT cpu entry with invalid MPIDR\n"); - return -EINVAL; + return; } total_cpus++; if (!enabled) - return -EINVAL; + return; if (enabled_cpus >= NR_CPUS) { pr_warn("NR_CPUS limit of %d reached, Processor %d/0x%llx ignored.\n", NR_CPUS, total_cpus, mpidr); - return -EINVAL; + return; } /* Check if GICC structure of boot CPU is available in the MADT */ @@ -130,7 +126,7 @@ acpi_map_gic_cpu_interface(struct acpi_madt_generic_interrupt *processor) if (bootcpu_valid) { pr_err("Firmware bug, duplicate CPU MPIDR: 0x%llx in MADT\n", mpidr); - return -EINVAL; + return; } bootcpu_valid = true; @@ -145,28 +141,27 @@ acpi_map_gic_cpu_interface(struct acpi_madt_generic_interrupt *processor) if (cpu_logical_map(i) == mpidr) { pr_err("Firmware bug, duplicate CPU MPIDR: 0x%llx in MADT\n", mpidr); - return -EINVAL; + return; } } if (!acpi_psci_present()) - return -EOPNOTSUPP; + return; cpu_ops[enabled_cpus] = cpu_get_ops("psci"); /* CPU 0 was already initialized */ if (enabled_cpus) { if (!cpu_ops[enabled_cpus]) - return -EINVAL; + return; if (cpu_ops[enabled_cpus]->cpu_init(NULL, enabled_cpus)) - return -EOPNOTSUPP; + return; /* map the logical cpu id to cpu MPIDR */ cpu_logical_map(enabled_cpus) = mpidr; } enabled_cpus++; - return enabled_cpus; } static int __init |