Support sleeping until an irq fires, and use where applicable.

Add wait_irq() - it's more efficient than looping with cpu_relax().
Also, move kbd irq enables down - only kbd_command needs it.
Also, make some minor code layout improvements to kbd.c.

1 files changed, 1 insertions, 3 deletions

diff --git a/src/clock.c b/src/clock.c
index 9009d49..ee2d05f 100644
--- a/src/clock.c
+++ b/src/clock.c
@@ -488,10 +488,8 @@ handle_1586(struct bregs *regs)
         set_code_fail(regs, RET_ECLOCKINUSE);
         return;
     }
-    irq_enable();
     while (!statusflag)
-        cpu_relax();
-    irq_disable();
+        wait_irq();
     set_success(regs);
 }