diff options
Diffstat (limited to 'arch/arm64/kernel/acpi.c')
| -rw-r--r-- | arch/arm64/kernel/acpi.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c index 172b7c9f6881..cd60329da8c4 100644 --- a/arch/arm64/kernel/acpi.c +++ b/arch/arm64/kernel/acpi.c @@ -43,7 +43,7 @@ static int enabled_cpus; static bool bootcpu_valid __initdata; static bool param_acpi_off __initdata; -bool param_acpi_force __initdata; +static bool param_acpi_force __initdata; static int __init parse_acpi(char *arg) { @@ -284,8 +284,13 @@ out: * We can parse ACPI boot-time tables such as MADT after * this function is called. * - * ACPI is enabled on return if ACPI tables initialized and sanity checks - * passed, disabled otherwise + * On return ACPI is enabled if either: + * + * - ACPI tables are initialized and sanity checks passed + * - acpi=force was passed in the command line and ACPI was not disabled + * explicitly through acpi=off command line parameter + * + * ACPI is disabled on function return otherwise */ void __init acpi_boot_table_init(void) { @@ -309,10 +314,13 @@ void __init acpi_boot_table_init(void) * If ACPI tables are initialized and FADT sanity checks passed, * leave ACPI enabled and carry on booting; otherwise disable ACPI * on initialization error. + * If acpi=force was passed on the command line it forces ACPI + * to be enabled even if its initialization failed. */ if (acpi_table_init() || acpi_fadt_sanity_check()) { pr_err("Failed to init ACPI tables\n"); - disable_acpi(); + if (!param_acpi_force) + disable_acpi(); } } |