From mboxrd@z Thu Jan 1 00:00:00 1970 From: dyoung@redhat.com (Dave Young) Date: Tue, 12 Aug 2014 14:10:22 +0800 Subject: [PATCH 5/5] efi_rtc: probe function error out in case no efi runtime enabled In-Reply-To: <1407823822-23829-1-git-send-email-dyoung@redhat.com> References: <1407823822-23829-1-git-send-email-dyoung@redhat.com> Message-ID: <1407823822-23829-5-git-send-email-dyoung@redhat.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org efi rtc depends on efi runtime services, so if efi runtime services are not usable it should error out. Without this patch rtc-efi will panic with 'noefi' boot Signed-off-by: Dave Young --- drivers/rtc/rtc-efi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/rtc/rtc-efi.c b/drivers/rtc/rtc-efi.c index 8225b89..8c02ed8 100644 --- a/drivers/rtc/rtc-efi.c +++ b/drivers/rtc/rtc-efi.c @@ -213,6 +213,9 @@ static int __init efi_rtc_probe(struct platform_device *dev) { struct rtc_device *rtc; + if (!efi_enabled(EFI_RUNTIME_SERVICES)) + return -ENODEV; + rtc = devm_rtc_device_register(&dev->dev, "rtc-efi", &efi_rtc_ops, THIS_MODULE); if (IS_ERR(rtc)) -- 1.8.3.1