[PATCH v1 2/2] reset: x86: Use cpu_hlt() in efi_reset_system()

[Denis Mukhin via U-Boot <u-boot@lists.u-boot-project.org>]

From: Denis Mukhin <dmukhin@ford.com> 

Use cpu_hlt() in busy loop in efi_reset_system() similarly to
pch_sysreset_power_off().

Note, this is safe for __efi_runtime-annotated efi_reset_system(),
because cpu_hlt() expands to a bare "hlt".

Signed-off-by: Denis Mukhin <dmukhin@ford.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
Original patch: https://lore.kernel.org/u-boot/20260603070743.1268544-6-dmukhin@ford.com/ 
---
 drivers/sysreset/sysreset_x86.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/sysreset/sysreset_x86.c b/drivers/sysreset/sysreset_x86.c
index 05a3ff9c8363..afb77d9c5c21 100644
--- a/drivers/sysreset/sysreset_x86.c
+++ b/drivers/sysreset/sysreset_x86.c
@@ -120,7 +120,8 @@ void __efi_runtime EFIAPI efi_reset_system(
 
 	/* TODO EFI_RESET_SHUTDOWN */
 
-	while (1) { }
+	for (;;)
+		cpu_hlt();
 }
 #endif
 
-- 
2.54.0