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arm64: kernel: remove non-legit DT warnings when booting using ACPI 

Since both CONFIG_ACPI and CONFIG_OF are enabled when booting using ACPI
tables on ARM64 platforms, we get few device tree warnings which are not
valid for ACPI boot. We can use of_have_populated_dt to check if the
device tree is populated or not before throwing out those errors.

This patch uses of_have_populated_dt to remove non legitimate device
tree warning when booting using ACPI tables.

Cc: Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
hifive-unleashed-5.1
Sudeep Holla 2015-07-23 18:28:26 +01:00 committed by Will Deacon
parent 77ee306c0a
commit e094d44568
2 changed files with 8 additions and 3 deletions
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9
arch/arm64/kernel/setup.c
View File

@ -423,8 +423,13 @@ void __init setup_arch(char **cmdline_p)
static int __init arm64_device_init(void)
{
of_iommu_init();
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
if (of_have_populated_dt()) {
of_iommu_init();
of_platform_populate(NULL, of_default_bus_match_table,
NULL, NULL);
} else if (acpi_disabled) {
pr_crit("Device tree not populated\n");
}
return 0;
}
arch_initcall_sync(arm64_device_init);

2
arch/arm64/kernel/topology.c
View File

@ -300,6 +300,6 @@ void __init init_cpu_topology(void)
* Discard anything that was parsed if we hit an error so we
* don't use partial information.
*/
if (parse_dt_topology())
if (of_have_populated_dt() && parse_dt_topology())
reset_cpu_topology();
}