On Thu, 2014-08-14 at 17:19 +0800, Dave Young wrote:
> 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
Is this still needed after commit da167ad7638759:
rtc: ia64: allow other architectures to use EFI RTC
That should keep efi_rtc_probe from being called if runtime services
are not available.
>
> Signed-off-by: Dave Young <dyoung@xxxxxxxxxx>
> ---
> 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 c4c3843..ca2487b 100644
> --- a/drivers/rtc/rtc-efi.c
> +++ b/drivers/rtc/rtc-efi.c
> @@ -191,6 +191,9 @@ 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))
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