X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Facpi%2Fprocessor_core.c;h=b13d64415b7ab651fc42be5b13351427d9dad6a3;hb=ac185bdc02c216040f3b83f654d864bd8a29cedc;hp=a1b46fb41c803373f82020da6869a3a9e7b8c566;hpb=35a5d9ed9fedb74c22cb19ff7d749289473144e0;p=linux-2.6-omap-h63xx.git diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index a1b46fb41c8..b13d64415b7 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -102,7 +102,7 @@ static struct acpi_driver acpi_processor_driver = { #define INSTALL_NOTIFY_HANDLER 1 #define UNINSTALL_NOTIFY_HANDLER 2 -static struct file_operations acpi_processor_info_fops = { +static const struct file_operations acpi_processor_info_fops = { .open = acpi_processor_info_open_fs, .read = seq_read, .llseek = seq_lseek, @@ -110,7 +110,7 @@ static struct file_operations acpi_processor_info_fops = { }; struct acpi_processor *processors[NR_CPUS]; -struct acpi_processor_errata errata; +struct acpi_processor_errata errata __read_mostly; /* -------------------------------------------------------------------------- Errata Handling @@ -122,10 +122,9 @@ static int acpi_processor_errata_piix4(struct pci_dev *dev) u8 value1 = 0; u8 value2 = 0; - ACPI_FUNCTION_TRACE("acpi_processor_errata_piix4"); if (!dev) - return_VALUE(-EINVAL); + return -EINVAL; /* * Note that 'dev' references the PIIX4 ACPI Controller. @@ -218,7 +217,7 @@ static int acpi_processor_errata_piix4(struct pci_dev *dev) ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Type-F DMA livelock erratum (C3 disabled)\n")); - return_VALUE(0); + return 0; } static int acpi_processor_errata(struct acpi_processor *pr) @@ -226,10 +225,9 @@ static int acpi_processor_errata(struct acpi_processor *pr) int result = 0; struct pci_dev *dev = NULL; - ACPI_FUNCTION_TRACE("acpi_processor_errata"); if (!pr) - return_VALUE(-EINVAL); + return -EINVAL; /* * PIIX4 @@ -242,7 +240,7 @@ static int acpi_processor_errata(struct acpi_processor *pr) pci_dev_put(dev); } - return_VALUE(result); + return result; } /* -------------------------------------------------------------------------- @@ -258,10 +256,9 @@ static int acpi_processor_set_pdc(struct acpi_processor *pr) struct acpi_object_list *pdc_in = pr->pdc; acpi_status status = AE_OK; - ACPI_FUNCTION_TRACE("acpi_processor_set_pdc"); if (!pdc_in) - return_VALUE(status); + return status; status = acpi_evaluate_object(pr->handle, "_PDC", pdc_in, NULL); @@ -269,7 +266,7 @@ static int acpi_processor_set_pdc(struct acpi_processor *pr) ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Could not evaluate _PDC, using legacy perf. control...\n")); - return_VALUE(status); + return status; } /* -------------------------------------------------------------------------- @@ -282,7 +279,6 @@ static int acpi_processor_info_seq_show(struct seq_file *seq, void *offset) { struct acpi_processor *pr = (struct acpi_processor *)seq->private; - ACPI_FUNCTION_TRACE("acpi_processor_info_seq_show"); if (!pr) goto end; @@ -301,7 +297,7 @@ static int acpi_processor_info_seq_show(struct seq_file *seq, void *offset) pr->flags.limit ? "yes" : "no"); end: - return_VALUE(0); + return 0; } static int acpi_processor_info_open_fs(struct inode *inode, struct file *file) @@ -314,13 +310,12 @@ static int acpi_processor_add_fs(struct acpi_device *device) { struct proc_dir_entry *entry = NULL; - ACPI_FUNCTION_TRACE("acpi_processor_add_fs"); if (!acpi_device_dir(device)) { acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), acpi_processor_dir); if (!acpi_device_dir(device)) - return_VALUE(-ENODEV); + return -ENODEV; } acpi_device_dir(device)->owner = THIS_MODULE; @@ -328,9 +323,7 @@ static int acpi_processor_add_fs(struct acpi_device *device) entry = create_proc_entry(ACPI_PROCESSOR_FILE_INFO, S_IRUGO, acpi_device_dir(device)); if (!entry) - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Unable to create '%s' fs entry\n", - ACPI_PROCESSOR_FILE_INFO)); + return -EIO; else { entry->proc_fops = &acpi_processor_info_fops; entry->data = acpi_driver_data(device); @@ -342,9 +335,7 @@ static int acpi_processor_add_fs(struct acpi_device *device) S_IFREG | S_IRUGO | S_IWUSR, acpi_device_dir(device)); if (!entry) - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Unable to create '%s' fs entry\n", - ACPI_PROCESSOR_FILE_THROTTLING)); + return -EIO; else { entry->proc_fops = &acpi_processor_throttling_fops; entry->data = acpi_driver_data(device); @@ -356,21 +347,18 @@ static int acpi_processor_add_fs(struct acpi_device *device) S_IFREG | S_IRUGO | S_IWUSR, acpi_device_dir(device)); if (!entry) - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Unable to create '%s' fs entry\n", - ACPI_PROCESSOR_FILE_LIMIT)); + return -EIO; else { entry->proc_fops = &acpi_processor_limit_fops; entry->data = acpi_driver_data(device); entry->owner = THIS_MODULE; } - return_VALUE(0); + return 0; } static int acpi_processor_remove_fs(struct acpi_device *device) { - ACPI_FUNCTION_TRACE("acpi_processor_remove_fs"); if (acpi_device_dir(device)) { remove_proc_entry(ACPI_PROCESSOR_FILE_INFO, @@ -383,7 +371,7 @@ static int acpi_processor_remove_fs(struct acpi_device *device) acpi_device_dir(device) = NULL; } - return_VALUE(0); + return 0; } /* Use the acpiid in MADT to map cpus in case of SMP */ @@ -430,10 +418,9 @@ static int acpi_processor_get_info(struct acpi_processor *pr) int cpu_index; static int cpu0_initialized; - ACPI_FUNCTION_TRACE("acpi_processor_get_info"); if (!pr) - return_VALUE(-EINVAL); + return -EINVAL; if (num_online_cpus() > 1) errata.smp = TRUE; @@ -459,9 +446,8 @@ static int acpi_processor_get_info(struct acpi_processor *pr) */ status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer); if (ACPI_FAILURE(status)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Error evaluating processor object\n")); - return_VALUE(-ENODEV); + printk(KERN_ERR PREFIX "Evaluating processor object\n"); + return -ENODEV; } /* @@ -490,10 +476,10 @@ static int acpi_processor_get_info(struct acpi_processor *pr) if (cpu_index == -1) { if (ACPI_FAILURE (acpi_processor_hotadd_init(pr->handle, &pr->id))) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Error getting cpuindex for acpiid 0x%x\n", - pr->acpi_id)); - return_VALUE(-ENODEV); + printk(KERN_ERR PREFIX + "Getting cpuindex for acpiid 0x%x\n", + pr->acpi_id); + return -ENODEV; } } @@ -503,8 +489,8 @@ static int acpi_processor_get_info(struct acpi_processor *pr) if (!object.processor.pblk_address) ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No PBLK (NULL address)\n")); else if (object.processor.pblk_length != 6) - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid PBLK length [%d]\n", - object.processor.pblk_length)); + printk(KERN_ERR PREFIX "Invalid PBLK length [%d]\n", + object.processor.pblk_length); else { pr->throttling.address = object.processor.pblk_address; pr->throttling.duty_offset = acpi_fadt.duty_offset; @@ -528,7 +514,7 @@ static int acpi_processor_get_info(struct acpi_processor *pr) acpi_processor_get_throttling_info(pr); acpi_processor_get_limit_info(pr); - return_VALUE(0); + return 0; } static void *processor_device_array[NR_CPUS]; @@ -539,14 +525,13 @@ static int acpi_processor_start(struct acpi_device *device) acpi_status status = AE_OK; struct acpi_processor *pr; - ACPI_FUNCTION_TRACE("acpi_processor_start"); pr = acpi_driver_data(device); result = acpi_processor_get_info(pr); if (result) { /* Processor is physically not present */ - return_VALUE(0); + return 0; } BUG_ON((pr->id >= NR_CPUS) || (pr->id < 0)); @@ -560,7 +545,7 @@ static int acpi_processor_start(struct acpi_device *device) processor_device_array[pr->id] != (void *)device) { printk(KERN_WARNING "BIOS reported wrong ACPI id" "for the processor\n"); - return_VALUE(-ENODEV); + return -ENODEV; } processor_device_array[pr->id] = (void *)device; @@ -572,10 +557,6 @@ static int acpi_processor_start(struct acpi_device *device) status = acpi_install_notify_handler(pr->handle, ACPI_DEVICE_NOTIFY, acpi_processor_notify, pr); - if (ACPI_FAILURE(status)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Error installing device notify handler\n")); - } /* _PDC call should be done before doing anything else (if reqd.). */ arch_acpi_processor_init_pdc(pr); @@ -592,7 +573,7 @@ static int acpi_processor_start(struct acpi_device *device) end: - return_VALUE(result); + return result; } static void acpi_processor_notify(acpi_handle handle, u32 event, void *data) @@ -600,13 +581,12 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data) struct acpi_processor *pr = (struct acpi_processor *)data; struct acpi_device *device = NULL; - ACPI_FUNCTION_TRACE("acpi_processor_notify"); if (!pr) - return_VOID; + return; if (acpi_bus_get_device(pr->handle, &device)) - return_VOID; + return; switch (event) { case ACPI_PROCESSOR_NOTIFY_PERFORMANCE: @@ -624,21 +604,20 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data) break; } - return_VOID; + return; } static int acpi_processor_add(struct acpi_device *device) { struct acpi_processor *pr = NULL; - ACPI_FUNCTION_TRACE("acpi_processor_add"); if (!device) - return_VALUE(-EINVAL); + return -EINVAL; pr = kmalloc(sizeof(struct acpi_processor), GFP_KERNEL); if (!pr) - return_VALUE(-ENOMEM); + return -ENOMEM; memset(pr, 0, sizeof(struct acpi_processor)); pr->handle = device->handle; @@ -646,7 +625,7 @@ static int acpi_processor_add(struct acpi_device *device) strcpy(acpi_device_class(device), ACPI_PROCESSOR_CLASS); acpi_driver_data(device) = pr; - return_VALUE(0); + return 0; } static int acpi_processor_remove(struct acpi_device *device, int type) @@ -654,31 +633,26 @@ static int acpi_processor_remove(struct acpi_device *device, int type) acpi_status status = AE_OK; struct acpi_processor *pr = NULL; - ACPI_FUNCTION_TRACE("acpi_processor_remove"); if (!device || !acpi_driver_data(device)) - return_VALUE(-EINVAL); + return -EINVAL; pr = (struct acpi_processor *)acpi_driver_data(device); if (pr->id >= NR_CPUS) { kfree(pr); - return_VALUE(0); + return 0; } if (type == ACPI_BUS_REMOVAL_EJECT) { if (acpi_processor_handle_eject(pr)) - return_VALUE(-EINVAL); + return -EINVAL; } acpi_processor_power_exit(pr, device); status = acpi_remove_notify_handler(pr->handle, ACPI_DEVICE_NOTIFY, acpi_processor_notify); - if (ACPI_FAILURE(status)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Error removing notify handler\n")); - } acpi_processor_remove_fs(device); @@ -686,7 +660,7 @@ static int acpi_processor_remove(struct acpi_device *device, int type) kfree(pr); - return_VALUE(0); + return 0; } #ifdef CONFIG_ACPI_HOTPLUG_CPU @@ -701,15 +675,13 @@ static int is_processor_present(acpi_handle handle) acpi_status status; unsigned long sta = 0; - ACPI_FUNCTION_TRACE("is_processor_present"); status = acpi_evaluate_integer(handle, "_STA", NULL, &sta); if (ACPI_FAILURE(status) || !(sta & ACPI_STA_PRESENT)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Processor Device is not present\n")); - return_VALUE(0); + ACPI_EXCEPTION((AE_INFO, status, "Processor Device is not present")); + return 0; } - return_VALUE(1); + return 1; } static @@ -719,30 +691,29 @@ int acpi_processor_device_add(acpi_handle handle, struct acpi_device **device) struct acpi_device *pdev; struct acpi_processor *pr; - ACPI_FUNCTION_TRACE("acpi_processor_device_add"); if (acpi_get_parent(handle, &phandle)) { - return_VALUE(-ENODEV); + return -ENODEV; } if (acpi_bus_get_device(phandle, &pdev)) { - return_VALUE(-ENODEV); + return -ENODEV; } if (acpi_bus_add(device, pdev, handle, ACPI_BUS_TYPE_PROCESSOR)) { - return_VALUE(-ENODEV); + return -ENODEV; } acpi_bus_start(*device); pr = acpi_driver_data(*device); if (!pr) - return_VALUE(-ENODEV); + return -ENODEV; if ((pr->id >= 0) && (pr->id < NR_CPUS)) { kobject_uevent(&(*device)->kobj, KOBJ_ONLINE); } - return_VALUE(0); + return 0; } static void @@ -752,7 +723,6 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data) struct acpi_device *device = NULL; int result; - ACPI_FUNCTION_TRACE("acpi_processor_hotplug_notify"); switch (event) { case ACPI_NOTIFY_BUS_CHECK: @@ -767,15 +737,14 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data) if (acpi_bus_get_device(handle, &device)) { result = acpi_processor_device_add(handle, &device); if (result) - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Unable to add the device\n")); + printk(KERN_ERR PREFIX + "Unable to add the device\n"); break; } pr = acpi_driver_data(device); if (!pr) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Driver data is NULL\n")); + printk(KERN_ERR PREFIX "Driver data is NULL\n"); break; } @@ -788,9 +757,8 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data) if ((!result) && ((pr->id >= 0) && (pr->id < NR_CPUS))) { kobject_uevent(&device->kobj, KOBJ_ONLINE); } else { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Device [%s] failed to start\n", - acpi_device_bid(device))); + printk(KERN_ERR PREFIX "Device [%s] failed to start\n", + acpi_device_bid(device)); } break; case ACPI_NOTIFY_EJECT_REQUEST: @@ -798,15 +766,15 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data) "received ACPI_NOTIFY_EJECT_REQUEST\n")); if (acpi_bus_get_device(handle, &device)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Device don't exist, dropping EJECT\n")); + printk(KERN_ERR PREFIX + "Device don't exist, dropping EJECT\n"); break; } pr = acpi_driver_data(device); if (!pr) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Driver data is NULL, dropping EJECT\n")); - return_VOID; + printk(KERN_ERR PREFIX + "Driver data is NULL, dropping EJECT\n"); + return; } if ((pr->id < NR_CPUS) && (cpu_present(pr->id))) @@ -818,7 +786,7 @@ acpi_processor_hotplug_notify(acpi_handle handle, u32 event, void *data) break; } - return_VOID; + return; } static acpi_status @@ -857,21 +825,20 @@ processor_walk_namespace_cb(acpi_handle handle, static acpi_status acpi_processor_hotadd_init(acpi_handle handle, int *p_cpu) { - ACPI_FUNCTION_TRACE("acpi_processor_hotadd_init"); if (!is_processor_present(handle)) { - return_VALUE(AE_ERROR); + return AE_ERROR; } if (acpi_map_lsapic(handle, p_cpu)) - return_VALUE(AE_ERROR); + return AE_ERROR; if (arch_register_cpu(*p_cpu)) { acpi_unmap_lsapic(*p_cpu); - return_VALUE(AE_ERROR); + return AE_ERROR; } - return_VALUE(AE_OK); + return AE_OK; } static int acpi_processor_handle_eject(struct acpi_processor *pr) @@ -928,20 +895,19 @@ static int __init acpi_processor_init(void) { int result = 0; - ACPI_FUNCTION_TRACE("acpi_processor_init"); memset(&processors, 0, sizeof(processors)); memset(&errata, 0, sizeof(errata)); acpi_processor_dir = proc_mkdir(ACPI_PROCESSOR_CLASS, acpi_root_dir); if (!acpi_processor_dir) - return_VALUE(0); + return 0; acpi_processor_dir->owner = THIS_MODULE; result = acpi_bus_register_driver(&acpi_processor_driver); if (result < 0) { remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir); - return_VALUE(0); + return 0; } acpi_processor_install_hotplug_notify(); @@ -950,12 +916,11 @@ static int __init acpi_processor_init(void) acpi_processor_ppc_init(); - return_VALUE(0); + return 0; } static void __exit acpi_processor_exit(void) { - ACPI_FUNCTION_TRACE("acpi_processor_exit"); acpi_processor_ppc_exit(); @@ -967,7 +932,7 @@ static void __exit acpi_processor_exit(void) remove_proc_entry(ACPI_PROCESSOR_CLASS, acpi_root_dir); - return_VOID; + return; } module_init(acpi_processor_init);