[SPARC64]: Make sure IRQs are disabled properly during early boot.

Else we trigger the new irqs_disable() assertion in start_kernel().

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 7 deletions

diff --git a/arch/sparc64/kernel/head.S b/arch/sparc64/kernel/head.S
index 75684b56767e..c8e9dc9d68a9 100644
--- a/arch/sparc64/kernel/head.S
+++ b/arch/sparc64/kernel/head.S
@@ -551,9 +551,10 @@ setup_trap_table:
         save    %sp, -192, %sp
 
         /* Force interrupts to be disabled. */
-        rdpr    %pstate, %o1
-        andn    %o1, PSTATE_IE, %o1
+        rdpr    %pstate, %l0
+        andn    %l0, PSTATE_IE, %o1
         wrpr    %o1, 0x0, %pstate
+        rdpr    %pil, %l1
         wrpr    %g0, 15, %pil
 
         /* Make the firmware call to jump over to the Linux trap table.  */
@@ -622,11 +623,9 @@ setup_trap_table:
         call    init_irqwork_curcpu
          nop
 
-        /* Now we can turn interrupts back on. */
-        rdpr    %pstate, %o1
-        or      %o1, PSTATE_IE, %o1
-        wrpr    %o1, 0, %pstate
-        wrpr    %g0, 0x0, %pil
+        /* Now we can restore interrupt state. */
+        wrpr    %l0, 0, %pstate
+        wrpr    %l1, 0x0, %pil
 
         ret
          restore