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[U-Boot,1/2] efi_loader: RestoreTPL should execute queued events

Message ID 20180324174022.10492-2-xypron.glpk@gmx.de
State Accepted
Delegated to: Alexander Graf
Headers show
Series efi_loader: (network) event handling | expand

Commit Message

Heinrich Schuchardt March 24, 2018, 5:40 p.m. UTC 
When the TPL is lowered queued events may become eligible for execution.

iPXE uses the following pattern to request event execution:

	bs->RestoreTPL ( TPL_APPLICATION );
	bs->RaiseTPL ( TPL_CALLBACK );

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
 lib/efi_loader/efi_boottime.c | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index 1ff0568d47..89d97326a8 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -277,6 +277,11 @@  static void EFIAPI efi_restore_tpl(efi_uintn_t old_tpl)
 	efi_tpl = old_tpl;
 	if (efi_tpl > TPL_HIGH_LEVEL)
 		efi_tpl = TPL_HIGH_LEVEL;
+
+	/*
+	 * Lowering the TPL may have made queued events eligible for execution.
+	 */
+	efi_timer_check();
 
 	EFI_EXIT(EFI_SUCCESS);
 }