efi: Update stale locking comment for struct efivars

The comment describing how struct efivars->lock is used hasn't been
updated in sync with the code. Fix it.

Reported-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Mike Waychison <mikew@google.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>

1 files changed, 2 insertions, 6 deletions

diff --git a/include/linux/efi.h b/include/linux/efi.h
index 59c8acfebca7..efc681fd5895 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -1040,12 +1040,8 @@ struct efivar_operations {
 struct efivars {
         /*
          * ->lock protects two things:
-         * 1) ->list - adds, removals, reads, writes
-         * 2) ops.[gs]et_variable() calls.
-         * It must not be held when creating sysfs entries or calling kmalloc.
-         * ops.get_next_variable() is only called from register_efivars()
-         * or efivar_update_sysfs_entries(),
-         * which is protected by the BKL, so that path is safe.
+         * 1) efivarfs_list and efivars_sysfs_list
+         * 2) ->ops calls
          */
         spinlock_t lock;
         struct kset *kset;