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[U-Boot,2/2] efi_loader: check timer events in Stall()

Message ID 20190602193316.26195-3-xypron.glpk@gmx.de
State Superseded, archived
Delegated to: Heinrich Schuchardt
Headers show
Series efi_loader: check timer events in Stall() | expand

Commit Message

Heinrich Schuchardt June 2, 2019, 7:33 p.m. UTC 
During a call to Stall() we should periodically check for timer events.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
 lib/efi_loader/efi_boottime.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

--
2.20.1
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Patch

diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
index f4e3186ffc..5036e239b6 100644
--- a/lib/efi_loader/efi_boottime.c
+++ b/lib/efi_loader/efi_boottime.c
@@ -1990,8 +1990,14 @@  out:
  */
 static efi_status_t EFIAPI efi_stall(unsigned long microseconds)
 {
+	u64 end_tick;
+
 	EFI_ENTRY("%ld", microseconds);
-	udelay(microseconds);
+
+	end_tick = get_ticks() + usec_to_tick(microseconds);
+	while (get_ticks() < end_tick)
+		efi_timer_check();
+
 	return EFI_EXIT(EFI_SUCCESS);
 }