firmware: Do not use WARN_ON(!spin_is_locked())

commit aee530cfecf4f3ec83b78406bac618cec35853f8 upstream.

spin_is_locked() always returns false for uniprocessor configurations
in several architectures, so do not use WARN_ON with it.
Use lockdep_assert_held() instead to also reduce overhead in
non-debug kernels.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/firmware/efi/vars.c b/drivers/firmware/efi/vars.c
index 391c67b182d9b282681890cd04b98c0183023abc..7dbc319e1cf539f46f84da62b1b1d64375f2f821 100644 (file)
--- a/drivers/firmware/efi/vars.c
+++ b/drivers/firmware/efi/vars.c
@@ -481,7 +481,7 @@ EXPORT_SYMBOL_GPL(efivar_entry_remove);
  */
 static void efivar_entry_list_del_unlock(struct efivar_entry *entry)
 {
-       WARN_ON(!spin_is_locked(&__efivars->lock));
+       lockdep_assert_held(&__efivars->lock);
 
        list_del(&entry->list);
        spin_unlock_irq(&__efivars->lock);
@@ -507,7 +507,7 @@ int __efivar_entry_delete(struct efivar_entry *entry)
        const struct efivar_operations *ops = __efivars->ops;
        efi_status_t status;
 
-       WARN_ON(!spin_is_locked(&__efivars->lock));
+       lockdep_assert_held(&__efivars->lock);
 
        status = ops->set_variable(entry->var.VariableName,
                                   &entry->var.VendorGuid,
@@ -667,7 +667,7 @@ struct efivar_entry *efivar_entry_find(efi_char16_t *name, efi_guid_t guid,
        int strsize1, strsize2;
        bool found = false;
 
-       WARN_ON(!spin_is_locked(&__efivars->lock));
+       lockdep_assert_held(&__efivars->lock);
 
        list_for_each_entry_safe(entry, n, head, list) {
                strsize1 = ucs2_strsize(name, 1024);
@@ -731,7 +731,7 @@ int __efivar_entry_get(struct efivar_entry *entry, u32 *attributes,
        const struct efivar_operations *ops = __efivars->ops;
        efi_status_t status;
 
-       WARN_ON(!spin_is_locked(&__efivars->lock));
+       lockdep_assert_held(&__efivars->lock);
 
        status = ops->get_variable(entry->var.VariableName,
                                   &entry->var.VendorGuid,