X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Facpi%2Fac.c;h=6daeace796a86c2b3e7892c517b5bab107ceb8a7;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=7839b831df94eea57c14a25fc17a310be29982b3;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c index 7839b831d..6daeace79 100644 --- a/drivers/acpi/ac.c +++ b/drivers/acpi/ac.c @@ -50,6 +50,9 @@ ACPI_MODULE_NAME("acpi_ac") MODULE_DESCRIPTION(ACPI_AC_DRIVER_NAME); MODULE_LICENSE("GPL"); +extern struct proc_dir_entry *acpi_lock_ac_dir(void); +extern void *acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir); + static int acpi_ac_add(struct acpi_device *device); static int acpi_ac_remove(struct acpi_device *device, int type); static int acpi_ac_open_fs(struct inode *inode, struct file *file); @@ -65,11 +68,11 @@ static struct acpi_driver acpi_ac_driver = { }; struct acpi_ac { - acpi_handle handle; + struct acpi_device * device; unsigned long state; }; -static struct file_operations acpi_ac_fops = { +static const struct file_operations acpi_ac_fops = { .open = acpi_ac_open_fs, .read = seq_read, .llseek = seq_lseek, @@ -84,20 +87,18 @@ static int acpi_ac_get_state(struct acpi_ac *ac) { acpi_status status = AE_OK; - ACPI_FUNCTION_TRACE("acpi_ac_get_state"); if (!ac) - return_VALUE(-EINVAL); + return -EINVAL; - status = acpi_evaluate_integer(ac->handle, "_PSR", NULL, &ac->state); + status = acpi_evaluate_integer(ac->device->handle, "_PSR", NULL, &ac->state); if (ACPI_FAILURE(status)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Error reading AC Adapter state\n")); + ACPI_EXCEPTION((AE_INFO, status, "Error reading AC Adapter state")); ac->state = ACPI_AC_STATUS_UNKNOWN; - return_VALUE(-ENODEV); + return -ENODEV; } - return_VALUE(0); + return 0; } /* -------------------------------------------------------------------------- @@ -108,16 +109,15 @@ static struct proc_dir_entry *acpi_ac_dir; static int acpi_ac_seq_show(struct seq_file *seq, void *offset) { - struct acpi_ac *ac = (struct acpi_ac *)seq->private; + struct acpi_ac *ac = seq->private; - ACPI_FUNCTION_TRACE("acpi_ac_seq_show"); if (!ac) - return_VALUE(0); + return 0; if (acpi_ac_get_state(ac)) { seq_puts(seq, "ERROR: Unable to read AC Adapter state\n"); - return_VALUE(0); + return 0; } seq_puts(seq, "state: "); @@ -133,7 +133,7 @@ static int acpi_ac_seq_show(struct seq_file *seq, void *offset) break; } - return_VALUE(0); + return 0; } static int acpi_ac_open_fs(struct inode *inode, struct file *file) @@ -145,13 +145,12 @@ static int acpi_ac_add_fs(struct acpi_device *device) { struct proc_dir_entry *entry = NULL; - ACPI_FUNCTION_TRACE("acpi_ac_add_fs"); if (!acpi_device_dir(device)) { acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device), acpi_ac_dir); if (!acpi_device_dir(device)) - return_VALUE(-ENODEV); + return -ENODEV; acpi_device_dir(device)->owner = THIS_MODULE; } @@ -159,21 +158,18 @@ static int acpi_ac_add_fs(struct acpi_device *device) entry = create_proc_entry(ACPI_AC_FILE_STATE, S_IRUGO, acpi_device_dir(device)); if (!entry) - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Unable to create '%s' fs entry\n", - ACPI_AC_FILE_STATE)); + return -ENODEV; else { entry->proc_fops = &acpi_ac_fops; entry->data = acpi_driver_data(device); entry->owner = THIS_MODULE; } - return_VALUE(0); + return 0; } static int acpi_ac_remove_fs(struct acpi_device *device) { - ACPI_FUNCTION_TRACE("acpi_ac_remove_fs"); if (acpi_device_dir(device)) { remove_proc_entry(ACPI_AC_FILE_STATE, acpi_device_dir(device)); @@ -182,7 +178,7 @@ static int acpi_ac_remove_fs(struct acpi_device *device) acpi_device_dir(device) = NULL; } - return_VALUE(0); + return 0; } /* -------------------------------------------------------------------------- @@ -191,19 +187,18 @@ static int acpi_ac_remove_fs(struct acpi_device *device) static void acpi_ac_notify(acpi_handle handle, u32 event, void *data) { - struct acpi_ac *ac = (struct acpi_ac *)data; + struct acpi_ac *ac = data; struct acpi_device *device = NULL; - ACPI_FUNCTION_TRACE("acpi_ac_notify"); if (!ac) - return_VOID; - - if (acpi_bus_get_device(ac->handle, &device)) - return_VOID; + return; + device = ac->device; switch (event) { case ACPI_AC_NOTIFY_STATUS: + case ACPI_NOTIFY_BUS_CHECK: + case ACPI_NOTIFY_DEVICE_CHECK: acpi_ac_get_state(ac); acpi_bus_generate_event(device, event, (u32) ac->state); break; @@ -213,7 +208,7 @@ static void acpi_ac_notify(acpi_handle handle, u32 event, void *data) break; } - return_VOID; + return; } static int acpi_ac_add(struct acpi_device *device) @@ -222,17 +217,15 @@ static int acpi_ac_add(struct acpi_device *device) acpi_status status = AE_OK; struct acpi_ac *ac = NULL; - ACPI_FUNCTION_TRACE("acpi_ac_add"); if (!device) - return_VALUE(-EINVAL); + return -EINVAL; - ac = kmalloc(sizeof(struct acpi_ac), GFP_KERNEL); + ac = kzalloc(sizeof(struct acpi_ac), GFP_KERNEL); if (!ac) - return_VALUE(-ENOMEM); - memset(ac, 0, sizeof(struct acpi_ac)); + return -ENOMEM; - ac->handle = device->handle; + ac->device = device; strcpy(acpi_device_name(device), ACPI_AC_DEVICE_NAME); strcpy(acpi_device_class(device), ACPI_AC_CLASS); acpi_driver_data(device) = ac; @@ -245,12 +238,10 @@ static int acpi_ac_add(struct acpi_device *device) if (result) goto end; - status = acpi_install_notify_handler(ac->handle, - ACPI_DEVICE_NOTIFY, acpi_ac_notify, + status = acpi_install_notify_handler(device->handle, + ACPI_ALL_NOTIFY, acpi_ac_notify, ac); if (ACPI_FAILURE(status)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Error installing notify handler\n")); result = -ENODEV; goto end; } @@ -265,7 +256,7 @@ static int acpi_ac_add(struct acpi_device *device) kfree(ac); } - return_VALUE(result); + return result; } static int acpi_ac_remove(struct acpi_device *device, int type) @@ -273,55 +264,50 @@ static int acpi_ac_remove(struct acpi_device *device, int type) acpi_status status = AE_OK; struct acpi_ac *ac = NULL; - ACPI_FUNCTION_TRACE("acpi_ac_remove"); if (!device || !acpi_driver_data(device)) - return_VALUE(-EINVAL); + return -EINVAL; - ac = (struct acpi_ac *)acpi_driver_data(device); + ac = acpi_driver_data(device); - status = acpi_remove_notify_handler(ac->handle, - ACPI_DEVICE_NOTIFY, acpi_ac_notify); - if (ACPI_FAILURE(status)) - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Error removing notify handler\n")); + status = acpi_remove_notify_handler(device->handle, + ACPI_ALL_NOTIFY, acpi_ac_notify); acpi_ac_remove_fs(device); kfree(ac); - return_VALUE(0); + return 0; } static int __init acpi_ac_init(void) { - int result = 0; + int result; - ACPI_FUNCTION_TRACE("acpi_ac_init"); + if (acpi_disabled) + return -ENODEV; - acpi_ac_dir = proc_mkdir(ACPI_AC_CLASS, acpi_root_dir); + acpi_ac_dir = acpi_lock_ac_dir(); if (!acpi_ac_dir) - return_VALUE(-ENODEV); - acpi_ac_dir->owner = THIS_MODULE; + return -ENODEV; result = acpi_bus_register_driver(&acpi_ac_driver); if (result < 0) { - remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir); - return_VALUE(-ENODEV); + acpi_unlock_ac_dir(acpi_ac_dir); + return -ENODEV; } - return_VALUE(0); + return 0; } static void __exit acpi_ac_exit(void) { - ACPI_FUNCTION_TRACE("acpi_ac_exit"); acpi_bus_unregister_driver(&acpi_ac_driver); - remove_proc_entry(ACPI_AC_CLASS, acpi_root_dir); + acpi_unlock_ac_dir(acpi_ac_dir); - return_VOID; + return; } module_init(acpi_ac_init);