From 24dee1fc99fd6d38fc859d7f6dda1dab21493bef Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 29 Nov 2013 16:27:43 +0100 Subject: ACPI / bind: Pass struct acpi_device pointer to acpi_bind_one() There is no reason to pass an ACPI handle to acpi_bind_one() instead of a struct acpi_device pointer to the target device object, so modify that function to take a struct acpi_device pointer as its second argument and update all code depending on it accordingly. Signed-off-by: Rafael J. Wysocki Tested-by: Lan Tianyu # for USB/ACPI --- drivers/acpi/acpi_processor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/acpi/acpi_processor.c') diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c index 3c1d6b0c09a4..d58a2aba0930 100644 --- a/drivers/acpi/acpi_processor.c +++ b/drivers/acpi/acpi_processor.c @@ -395,7 +395,7 @@ static int acpi_processor_add(struct acpi_device *device, goto err; } - result = acpi_bind_one(dev, pr->handle); + result = acpi_bind_one(dev, device); if (result) goto err; -- cgit From b981513f806d26b2cc971eb65ced14bede67558b Mon Sep 17 00:00:00 2001 From: Jiang Liu Date: Thu, 9 Jan 2014 16:15:19 +0800 Subject: ACPI / scan: bail out early if failed to parse APIC ID for CPU Enhance ACPI CPU hotplug driver to print clear error message and bail out early if BIOS returns wrong value in ACPI MADT table or _MAT method. Otherwise it will add the CPU device even if failed to get APIC ID and fails any operations against sysfs interface: /sys/devices/system/cpu/cpux/online Signed-off-by: Jiang Liu Signed-off-by: Rafael J. Wysocki --- drivers/acpi/acpi_processor.c | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) (limited to 'drivers/acpi/acpi_processor.c') diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c index 3c1d6b0c09a4..6ce71b07c197 100644 --- a/drivers/acpi/acpi_processor.c +++ b/drivers/acpi/acpi_processor.c @@ -212,7 +212,7 @@ static int acpi_processor_get_info(struct acpi_device *device) union acpi_object object = { 0 }; struct acpi_buffer buffer = { sizeof(union acpi_object), &object }; struct acpi_processor *pr = acpi_driver_data(device); - int cpu_index, device_declaration = 0; + int apic_id, cpu_index, device_declaration = 0; acpi_status status = AE_OK; static int cpu0_initialized; unsigned long long value; @@ -258,18 +258,21 @@ static int acpi_processor_get_info(struct acpi_device *device) device_declaration = 1; pr->acpi_id = value; } - pr->apic_id = acpi_get_apicid(pr->handle, device_declaration, - pr->acpi_id); - cpu_index = acpi_map_cpuid(pr->apic_id, pr->acpi_id); - /* Handle UP system running SMP kernel, with no LAPIC in MADT */ - if (!cpu0_initialized && (cpu_index == -1) && - (num_online_cpus() == 1)) { - cpu_index = 0; + apic_id = acpi_get_apicid(pr->handle, device_declaration, pr->acpi_id); + if (apic_id < 0) { + acpi_handle_err(pr->handle, "failed to get CPU APIC ID.\n"); + return -ENODEV; } + pr->apic_id = apic_id; - cpu0_initialized = 1; - + cpu_index = acpi_map_cpuid(pr->apic_id, pr->acpi_id); + if (!cpu0_initialized) { + cpu0_initialized = 1; + /* Handle UP system running SMP kernel, with no LAPIC in MADT */ + if ((cpu_index == -1) && (num_online_cpus() == 1)) + cpu_index = 0; + } pr->id = cpu_index; /* @@ -282,6 +285,7 @@ static int acpi_processor_get_info(struct acpi_device *device) if (ret) return ret; } + /* * On some boxes several processors use the same processor bus id. * But they are located in different scope. For example: -- cgit