sparc64: Fix build errors with gcc-4.6.0
Most of the warnings emitted (we fail arch/sparc file
builds with -Werror) were legitimate but harmless, however
one case (n2_pcr_write) was a genuine bug.
Based almost entirely upon a patch by Sam Ravnborg.
Reported-by: Dennis Gilmore <dennis@ausil.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index 555a76d..3e94a8c 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -189,7 +189,7 @@
void smp_synchronize_tick_client(void)
{
long i, delta, adj, adjust_latency = 0, done = 0;
- unsigned long flags, rt, master_time_stamp, bound;
+ unsigned long flags, rt, master_time_stamp;
#if DEBUG_TICK_SYNC
struct {
long rt; /* roundtrip time */
@@ -208,10 +208,8 @@
{
for (i = 0; i < NUM_ROUNDS; i++) {
delta = get_delta(&rt, &master_time_stamp);
- if (delta == 0) {
+ if (delta == 0)
done = 1; /* let's lock on to this... */
- bound = rt;
- }
if (!done) {
if (i > 0) {
@@ -933,13 +931,12 @@
void flush_dcache_page_all(struct mm_struct *mm, struct page *page)
{
void *pg_addr;
- int this_cpu;
u64 data0;
if (tlb_type == hypervisor)
return;
- this_cpu = get_cpu();
+ preempt_disable();
#ifdef CONFIG_DEBUG_DCFLUSH
atomic_inc(&dcpage_flushes);
@@ -964,7 +961,7 @@
}
__local_flush_dcache_page(page);
- put_cpu();
+ preempt_enable();
}
void __irq_entry smp_new_mmu_context_version_client(int irq, struct pt_regs *regs)