[PATCH 2/2] efirtc: add efi_enabled check in efi_rtc_init

[Geliang Tang]

Add efi_enabled check in efi_rtc_init() to make sure that efi is enabled.

Signed-off-by: Geliang Tang <geliangtang@xxxxxxx>
---
 drivers/char/efirtc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/char/efirtc.c b/drivers/char/efirtc.c
index 5323d8c..80058bd 100644
--- a/drivers/char/efirtc.c
+++ b/drivers/char/efirtc.c
@@ -378,6 +378,9 @@ efi_rtc_init(void)
 	int ret;
 	struct proc_dir_entry *dir;
 
+	if (!efi_enabled(EFI_RUNTIME_SERVICES))
+		return 0;
+
 	printk(KERN_INFO "EFI Time Services Driver v%s\n", EFI_RTC_VERSION);
 
 	ret = misc_register(&efi_rtc_dev);
-- 
2.4.3


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