[SPARC64]: Fix powering off on SMP.

Doing a "SUNW,stop-self" firmware call on the other cpus is not the
correct thing to do when dropping into the firmware for a halt,
reboot, or power-off.

For now, just do nothing to quiet the other cpus, as the system should
be quiescent enough.  Later we may decide to implement smp_send_stop()
like the other SMP platforms do.

Based upon a report from Christopher Zimmermann.

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

3 files changed, 0 insertions, 35 deletions

diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 590df5a16f5a..b137fd63f5e1 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -1001,13 +1001,6 @@ void smp_penguin_jailcell(int irq, struct pt_regs *regs)
         preempt_enable();
 }
 
-extern unsigned long xcall_promstop;
-
-void smp_promstop_others(void)
-{
-        smp_cross_call(&xcall_promstop, 0, 0, 0);
-}
-
 #define prof_multiplier(__cpu)          cpu_data(__cpu).multiplier
 #define prof_counter(__cpu)             cpu_data(__cpu).counter
 
diff --git a/arch/sparc64/mm/ultra.S b/arch/sparc64/mm/ultra.S
index 058b8126c1a7..e4c9151fa116 100644
--- a/arch/sparc64/mm/ultra.S
+++ b/arch/sparc64/mm/ultra.S
@@ -453,22 +453,6 @@ xcall_flush_dcache_page_spitfire: /* %g1 == physical page address
         nop
         nop
 
-        .globl          xcall_promstop
-xcall_promstop:
-        rdpr            %pstate, %g2
-        wrpr            %g2, PSTATE_IG | PSTATE_AG, %pstate
-        rdpr            %pil, %g2
-        wrpr            %g0, 15, %pil
-        sethi           %hi(109f), %g7
-        b,pt            %xcc, etrap_irq
-109:     or             %g7, %lo(109b), %g7
-        flushw
-        call            prom_stopself
-         nop
-        /* We should not return, just spin if we do... */
-1:      b,a,pt          %xcc, 1b
-        nop
-
         .data
 
 errata32_hwbug:
diff --git a/arch/sparc64/prom/misc.c b/arch/sparc64/prom/misc.c
index 9b895faf077b..87f5cfce23bb 100644
--- a/arch/sparc64/prom/misc.c
+++ b/arch/sparc64/prom/misc.c
@@ -68,19 +68,11 @@ void prom_cmdline(void)
         local_irq_restore(flags);
 }
 
-#ifdef CONFIG_SMP
-extern void smp_promstop_others(void);
-#endif
-
 /* Drop into the prom, but completely terminate the program.
  * No chance of continuing.
  */
 void prom_halt(void)
 {
-#ifdef CONFIG_SMP
-        smp_promstop_others();
-        udelay(8000);
-#endif
 again:
         p1275_cmd("exit", P1275_INOUT(0, 0));
         goto again; /* PROM is out to get me -DaveM */
@@ -88,10 +80,6 @@ again:
 
 void prom_halt_power_off(void)
 {
-#ifdef CONFIG_SMP
-        smp_promstop_others();
-        udelay(8000);
-#endif
         p1275_cmd("SUNW,power-off", P1275_INOUT(0, 0));
 
         /* if nothing else helps, we just halt */