From: Lee, Chun-Yi
Git-commit: 605e70c7aa1b7b0d554baf945630c1d606bbfbc3
Patch-mainline: v3.8
References: bnc#808680
Target: openSUSE 12.3
UEFI variable filesystem need a new mount point, so this patch add
efivars kobject to efi_kobj for create a /sys/firmware/efi/efivars
folder.
Cc: Matthew Garrett
Cc: H. Peter Anvin
Signed-off-by: Lee, Chun-Yi
Signed-off-by: Jeremy Kerr
Signed-off-by: Matt Fleming
---
drivers/firmware/efivars.c | 9 +++++++++
include/linux/efi.h | 1 +
2 files changed, 10 insertions(+)
--- a/drivers/firmware/efivars.c
+++ b/drivers/firmware/efivars.c
@@ -1527,6 +1527,7 @@ void unregister_efivars(struct efivars *
sysfs_remove_bin_file(&efivars->kset->kobj, efivars->del_var);
kfree(efivars->new_var);
kfree(efivars->del_var);
+ kobject_put(efivars->kobject);
kset_unregister(efivars->kset);
}
EXPORT_SYMBOL_GPL(unregister_efivars);
@@ -1558,6 +1559,14 @@ int register_efivars(struct efivars *efi
goto out;
}
+ efivars->kobject = kobject_create_and_add("efivars", parent_kobj);
+ if (!efivars->kobject) {
+ pr_err("efivars: Subsystem registration failed.\n");
+ error = -ENOMEM;
+ kset_unregister(efivars->kset);
+ goto out;
+ }
+
/*
* Per EFI spec, the maximum storage allocated for both
* the variable name and variable data is 1024 bytes.
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -678,6 +678,7 @@ struct efivars {
spinlock_t lock;
struct list_head list;
struct kset *kset;
+ struct kobject *kobject;
struct bin_attribute *new_var, *del_var;
const struct efivar_operations *ops;
struct efivar_entry *walk_entry;
--
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