diff options
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/efivars.c | 49 |
1 files changed, 31 insertions, 18 deletions
diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index 528ce47c136..5633018c34a 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -103,8 +103,6 @@ struct efivars { struct kset *kset; struct bin_attribute *new_var, *del_var; }; -static struct efivars __efivars; -static struct efivars *efivars = &__efivars; /* * The maximum size of VariableName + Data = 1024 @@ -124,6 +122,7 @@ struct efi_variable { struct efivar_entry { + struct efivars *efivars; struct efi_variable var; struct list_head list; struct kobject kobj; @@ -150,9 +149,10 @@ struct efivar_attribute efivar_attr_##_name = { \ * Prototype for sysfs creation function */ static int -efivar_create_sysfs_entry(unsigned long variable_name_size, - efi_char16_t *variable_name, - efi_guid_t *vendor_guid); +efivar_create_sysfs_entry(struct efivars *efivars, + unsigned long variable_name_size, + efi_char16_t *variable_name, + efi_guid_t *vendor_guid); /* Return the number of unicode characters in data */ static unsigned long @@ -176,7 +176,7 @@ utf8_strsize(efi_char16_t *data, unsigned long maxlength) } static efi_status_t -get_var_data(struct efi_variable *var) +get_var_data(struct efivars *efivars, struct efi_variable *var) { efi_status_t status; @@ -221,7 +221,7 @@ efivar_attr_read(struct efivar_entry *entry, char *buf) if (!entry || !buf) return -EINVAL; - status = get_var_data(var); + status = get_var_data(entry->efivars, var); if (status != EFI_SUCCESS) return -EIO; @@ -244,7 +244,7 @@ efivar_size_read(struct efivar_entry *entry, char *buf) if (!entry || !buf) return -EINVAL; - status = get_var_data(var); + status = get_var_data(entry->efivars, var); if (status != EFI_SUCCESS) return -EIO; @@ -261,7 +261,7 @@ efivar_data_read(struct efivar_entry *entry, char *buf) if (!entry || !buf) return -EINVAL; - status = get_var_data(var); + status = get_var_data(entry->efivars, var); if (status != EFI_SUCCESS) return -EIO; @@ -276,6 +276,7 @@ static ssize_t efivar_store_raw(struct efivar_entry *entry, const char *buf, size_t count) { struct efi_variable *new_var, *var = &entry->var; + struct efivars *efivars = entry->efivars; efi_status_t status = EFI_NOT_FOUND; if (count != sizeof(struct efi_variable)) @@ -325,7 +326,7 @@ efivar_show_raw(struct efivar_entry *entry, char *buf) if (!entry || !buf) return 0; - status = get_var_data(var); + status = get_var_data(entry->efivars, var); if (status != EFI_SUCCESS) return -EIO; @@ -413,6 +414,7 @@ static ssize_t efivar_create(struct file *filp, struct kobject *kobj, char *buf, loff_t pos, size_t count) { struct efi_variable *new_var = (struct efi_variable *)buf; + struct efivars *efivars = bin_attr->private; struct efivar_entry *search_efivar, *n; unsigned long strsize1, strsize2; efi_status_t status = EFI_NOT_FOUND; @@ -459,8 +461,11 @@ static ssize_t efivar_create(struct file *filp, struct kobject *kobj, spin_unlock(&efivars->lock); /* Create the entry in sysfs. Locking is not required here */ - status = efivar_create_sysfs_entry(utf8_strsize(new_var->VariableName, - 1024), new_var->VariableName, &new_var->VendorGuid); + status = efivar_create_sysfs_entry(efivars, + utf8_strsize(new_var->VariableName, + 1024), + new_var->VariableName, + &new_var->VendorGuid); if (status) { printk(KERN_WARNING "efivars: variable created, but sysfs entry wasn't.\n"); } @@ -472,6 +477,7 @@ static ssize_t efivar_delete(struct file *filp, struct kobject *kobj, char *buf, loff_t pos, size_t count) { struct efi_variable *del_var = (struct efi_variable *)buf; + struct efivars *efivars = bin_attr->private; struct efivar_entry *search_efivar, *n; unsigned long strsize1, strsize2; efi_status_t status = EFI_NOT_FOUND; @@ -580,9 +586,10 @@ static struct kobject *efi_kobj; * Returns 1 on failure, 0 on success */ static int -efivar_create_sysfs_entry(unsigned long variable_name_size, - efi_char16_t *variable_name, - efi_guid_t *vendor_guid) +efivar_create_sysfs_entry(struct efivars *efivars, + unsigned long variable_name_size, + efi_char16_t *variable_name, + efi_guid_t *vendor_guid) { int i, short_name_size = variable_name_size / sizeof(efi_char16_t) + 38; char *short_name; @@ -597,6 +604,7 @@ efivar_create_sysfs_entry(unsigned long variable_name_size, return 1; } + new_efivar->efivars = efivars; memcpy(new_efivar->var.VariableName, variable_name, variable_name_size); memcpy(&(new_efivar->var.VendorGuid), vendor_guid, sizeof(efi_guid_t)); @@ -691,6 +699,8 @@ out_free: return error; } +static struct efivars __efivars; + /* * For now we register the efi subsystem with the firmware subsystem * and the vars subsystem with the efi subsystem. In the future, it @@ -706,6 +716,7 @@ efivars_init(void) efi_guid_t vendor_guid; efi_char16_t *variable_name; unsigned long variable_name_size = 1024; + struct efivars *efivars = &__efivars; int error = 0; if (!efi_enabled) @@ -751,9 +762,10 @@ efivars_init(void) &vendor_guid); switch (status) { case EFI_SUCCESS: - efivar_create_sysfs_entry(variable_name_size, - variable_name, - &vendor_guid); + efivar_create_sysfs_entry(efivars, + variable_name_size, + variable_name, + &vendor_guid); break; case EFI_NOT_FOUND: break; @@ -788,6 +800,7 @@ out_free: static void __exit efivars_exit(void) { + struct efivars *efivars = &__efivars; struct efivar_entry *entry, *n; list_for_each_entry_safe(entry, n, &efivars->list, list) { |