From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Sun, 19 May 2019 19:41:28 +0000 (+0200)
Subject: efi_loader: return values of GetTime()
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=bb2b13d52877c06f798600c848ddf1eb750ba85f;p=u-boot.git

efi_loader: return values of GetTime()

According to the UEFI spec 2.8 the GetTime() runtime service should return
EFI_UNSUPPORTED if the real time clock is not available.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---

diff --git a/lib/efi_loader/efi_runtime.c b/lib/efi_loader/efi_runtime.c
index 8d1370b4dd..058b40a887 100644
--- a/lib/efi_loader/efi_runtime.c
+++ b/lib/efi_loader/efi_runtime.c
@@ -169,7 +169,6 @@ static efi_status_t EFIAPI efi_get_time_boottime(
 {
 #ifdef CONFIG_DM_RTC
 	efi_status_t ret = EFI_SUCCESS;
-	int r;
 	struct rtc_time tm;
 	struct udevice *dev;
 
@@ -179,11 +178,12 @@ static efi_status_t EFIAPI efi_get_time_boottime(
 		ret = EFI_INVALID_PARAMETER;
 		goto out;
 	}
-
-	r = uclass_get_device(UCLASS_RTC, 0, &dev);
-	if (!r)
-		r = dm_rtc_get(dev, &tm);
-	if (r) {
+	if (uclass_get_device(UCLASS_RTC, 0, &dev) ||
+	    dm_rtc_get(dev, &tm)) {
+		ret = EFI_UNSUPPORTED;
+		goto out;
+	}
+	if (dm_rtc_get(dev, &tm)) {
 		ret = EFI_DEVICE_ERROR;
 		goto out;
 	}
@@ -210,7 +210,7 @@ out:
 	return EFI_EXIT(ret);
 #else
 	EFI_ENTRY("%p %p", time, capabilities);
-	return EFI_EXIT(EFI_DEVICE_ERROR);
+	return EFI_EXIT(EFI_UNSUPPORTED);
 #endif
 }