[MIPS] Make SB1 cache flushes not to use on_each_cpu

This fixes the

  start_kernel(): bug: interrupts were enabled early

messages.

Signed-off-by: Manish Lachwani <mlachwani@mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 13 insertions, 4 deletions

diff --git a/arch/mips/mm/c-sb1.c b/arch/mips/mm/c-sb1.c
index f2941b4c9f33..ea49a775bf28 100644
--- a/arch/mips/mm/c-sb1.c
+++ b/arch/mips/mm/c-sb1.c
@@ -49,6 +49,15 @@ static unsigned short dcache_sets;
 static unsigned int icache_range_cutoff;
 static unsigned int dcache_range_cutoff;
 
+static inline void sb1_on_each_cpu(void (*func) (void *info), void *info,
+                                   int retry, int wait)
+{
+        preempt_disable();
+        smp_call_function(func, info, retry, wait);
+        func(info);
+        preempt_enable();
+}
+
 /*
  * The dcache is fully coherent to the system, with one
  * big caveat:  the instruction stream.  In other words,
@@ -226,7 +235,7 @@ static void sb1_flush_cache_page(struct vm_area_struct *vma, unsigned long addr,
         args.vma = vma;
         args.addr = addr;
         args.pfn = pfn;
-        on_each_cpu(sb1_flush_cache_page_ipi, (void *) &args, 1, 1);
+        sb1_on_each_cpu(sb1_flush_cache_page_ipi, (void *) &args, 1, 1);
 }
 #else
 void sb1_flush_cache_page(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn)
@@ -249,7 +258,7 @@ void sb1___flush_cache_all_ipi(void *ignored)
 
 static void sb1___flush_cache_all(void)
 {
-        on_each_cpu(sb1___flush_cache_all_ipi, 0, 1, 1);
+        sb1_on_each_cpu(sb1___flush_cache_all_ipi, 0, 1, 1);
 }
 #else
 void sb1___flush_cache_all(void)
@@ -299,7 +308,7 @@ void sb1_flush_icache_range(unsigned long start, unsigned long end)
 
         args.start = start;
         args.end = end;
-        on_each_cpu(sb1_flush_icache_range_ipi, &args, 1, 1);
+        sb1_on_each_cpu(sb1_flush_icache_range_ipi, &args, 1, 1);
 }
 #else
 void sb1_flush_icache_range(unsigned long start, unsigned long end)
@@ -326,7 +335,7 @@ static void sb1_flush_cache_sigtramp_ipi(void *info)
 
 static void sb1_flush_cache_sigtramp(unsigned long addr)
 {
-        on_each_cpu(sb1_flush_cache_sigtramp_ipi, (void *) addr, 1, 1);
+        sb1_on_each_cpu(sb1_flush_cache_sigtramp_ipi, (void *) addr, 1, 1);
 }
 #else
 void sb1_flush_cache_sigtramp(unsigned long addr)