[pcbios] Do not switch to real mode to sleep the CPU

Now that we can handle interrupts while in protected mode, there is no
need to switch to real mode just to halt the CPU.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

diff --git a/src/arch/i386/interface/pcbios/bios_nap.c b/src/arch/i386/interface/pcbios/bios_nap.c
index 7f4614666b43af30a2dea2087c28f700fdb6702b..1e7de756be05945730dba7df1a22e4cf416ab951 100644 (file)
--- a/src/arch/i386/interface/pcbios/bios_nap.c
+++ b/src/arch/i386/interface/pcbios/bios_nap.c
@@ -8,9 +8,9 @@ FILE_LICENCE ( GPL2_OR_LATER );
  *
  */
 static void bios_cpu_nap ( void ) {
-       __asm__ __volatile__ ( REAL_CODE ( "sti\n\t"
-                                          "hlt\n\t"
-                                          "cli\n\t" ) : : );
+       __asm__ __volatile__ ( "sti\n\t"
+                              "hlt\n\t"
+                              "cli\n\t" );
 }
 
 PROVIDE_NAP ( pcbios, cpu_nap, bios_cpu_nap );