This patch creates efivars mount point when active efivars abstraction be set. It is useful for userland to determine the availability of efivars filesystem.
v2: Using efivars_kobject() helper instead of checking GetVariable or GetNextVariable EFI runtime services. Because the efivarfs code could be instantiated using a different efivars abstraction. Cc: Matthias Brugger <[email protected]> Cc: Fabian Vogt <[email protected]> Cc: Ilias Apalodimas <[email protected]> Cc: Ard Biesheuvel <[email protected]> Signed-off-by: "Lee, Chun-Yi" <[email protected]> --- drivers/firmware/efi/efi.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c index 3aa07c3b5136..db483fc68501 100644 --- a/drivers/firmware/efi/efi.c +++ b/drivers/firmware/efi/efi.c @@ -405,11 +405,13 @@ static int __init efisubsys_init(void) if (error) goto err_remove_group; - /* and the standard mountpoint for efivarfs */ - error = sysfs_create_mount_point(efi_kobj, "efivars"); - if (error) { - pr_err("efivars: Subsystem registration failed.\n"); - goto err_remove_group; + if (efivars_kobject()) { + /* and the standard mountpoint for efivarfs */ + error = sysfs_create_mount_point(efi_kobj, "efivars"); + if (error) { + pr_err("efivars: Subsystem registration failed.\n"); + goto err_remove_group; + } } if (efi_enabled(EFI_DBG) && efi_enabled(EFI_PRESERVE_BS_REGIONS)) -- 2.16.4
