efivars: Add module parameter to disable use as a pstore backend

[pandora-kernel.git] / drivers / firmware / efivars.c

diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
index 37b6f24..6607daf 100644 (file)
--- a/drivers/firmware/efivars.c
+++ b/drivers/firmware/efivars.c
@@ -103,6 +103,11 @@ MODULE_VERSION(EFIVARS_VERSION);
  */
 #define GUID_LEN 36
 
+static bool efivars_pstore_disable =
+       IS_ENABLED(EFI_VARS_PSTORE_DEFAULT_DISABLE);
+
+module_param_named(pstore_disable, efivars_pstore_disable, bool, 0644);
+
 /*
  * The maximum size of VariableName + Data = 1024
  * Therefore, it's reasonable to save that much
@@ -2009,7 +2014,8 @@ int register_efivars(struct efivars *efivars,
        if (error)
                unregister_efivars(efivars);
 
-       efivar_pstore_register(efivars);
+       if (!efivars_pstore_disable)
+               efivar_pstore_register(efivars);
 
        register_filesystem(&efivarfs_type);