[PATCH v2 2/4] EFI: Do not consider OsIndications variable if CONFIG_EFI_IGNORE_OSINDICATIONS is enabled

[Sughosh Ganu]

The EFI_IGNORE_OSINDICATIONS config symbol was introduced as a
mechanism to have capsule updates work even on platforms where the
SetVariable runtime service was not supported. The current logic
requires the OsIndications variable to have been set to a 64 bit value
even when the EFI_IGNORE_OSINDICATIONS config is enabled. Return an
error code on not being able to read the variable only when
EFI_IGNORE_OSINDICATIONS is not enabled.

Signed-off-by: Sughosh Ganu <sughosh.ganu at linaro.org>
---

Changes since V1:
* Read the OsIndications variable, if present and clear the
  EFI_OS_INDICATIONS_FILE_CAPSULE_DELIVERY_SUPPORTED flag even if the
  CONFIG_EFI_IGNORE_OSINDICATIONS config is enabled.

 lib/efi_loader/efi_capsule.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/lib/efi_loader/efi_capsule.c b/lib/efi_loader/efi_capsule.c
index c76a5f3570..a6b98f066a 100644
--- a/lib/efi_loader/efi_capsule.c
+++ b/lib/efi_loader/efi_capsule.c
@@ -1058,14 +1058,15 @@ static void efi_capsule_scan_done(void)
  */
 static efi_status_t check_run_capsules(void)
 {
-	u64 os_indications;
+	u64 os_indications = 0x0;
 	efi_uintn_t size;
 	efi_status_t r;
 
 	size = sizeof(os_indications);
 	r = efi_get_variable_int(u"OsIndications", &efi_global_variable_guid,
 				 NULL, &size, &os_indications, NULL);
-	if (r != EFI_SUCCESS || size != sizeof(os_indications))
+	if (!IS_ENABLED(CONFIG_EFI_IGNORE_OSINDICATIONS) &&
+	    (r != EFI_SUCCESS || size != sizeof(os_indications)))
 		return EFI_NOT_FOUND;
 
 	if (os_indications &
@@ -1084,7 +1085,7 @@ static efi_status_t check_run_capsules(void)
 		return EFI_SUCCESS;
 	} else if (IS_ENABLED(CONFIG_EFI_IGNORE_OSINDICATIONS)) {
 		return EFI_SUCCESS;
-	} else  {
+	} else {
 		return EFI_NOT_FOUND;
 	}
 }
-- 
2.25.1