[PATCH v15 13/13] powerpc: clean stack pointers naming

[Christophe Leroy]

Some stack pointers used to also be thread_info pointers
and were called tp. Now that they are only stack pointers,
rename them sp.

Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr>
---
 arch/powerpc/kernel/irq.c      | 17 +++++++----------
 arch/powerpc/kernel/setup_64.c | 11 +++--------
 2 files changed, 10 insertions(+), 18 deletions(-)

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 938944c6e2ee..8a936723c791 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -659,21 +659,21 @@ void __do_irq(struct pt_regs *regs)
 void do_IRQ(struct pt_regs *regs)
 {
        struct pt_regs *old_regs = set_irq_regs(regs);
-       void *curtp, *irqtp, *sirqtp;
+       void *cursp, *irqsp, *sirqsp;
 
        /* Switch to the irq stack to handle this */
-       curtp = (void *)(current_stack_pointer() & ~(THREAD_SIZE - 1));
-       irqtp = hardirq_ctx[raw_smp_processor_id()];
-       sirqtp = softirq_ctx[raw_smp_processor_id()];
+       cursp = (void *)(current_stack_pointer() & ~(THREAD_SIZE - 1));
+       irqsp = hardirq_ctx[raw_smp_processor_id()];
+       sirqsp = softirq_ctx[raw_smp_processor_id()];
 
        /* Already there ? */
-       if (unlikely(curtp == irqtp || curtp == sirqtp)) {
+       if (unlikely(cursp == irqsp || cursp == sirqsp)) {
                __do_irq(regs);
                set_irq_regs(old_regs);
                return;
        }
        /* Switch stack and call */
-       call_do_irq(regs, irqtp);
+       call_do_irq(regs, irqsp);
 
        set_irq_regs(old_regs);
 }
@@ -695,10 +695,7 @@ void *hardirq_ctx[NR_CPUS] __read_mostly;
 
 void do_softirq_own_stack(void)
 {
-       void *irqtp;
-
-       irqtp = softirq_ctx[smp_processor_id()];
-       call_do_softirq(irqtp);
+       call_do_softirq(softirq_ctx[smp_processor_id()]);
 }
 
 irq_hw_number_t virq_to_hw(unsigned int virq)
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 2db1c5f7d141..daa361fc6a24 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -716,19 +716,14 @@ void __init emergency_stack_init(void)
        limit = min(ppc64_bolted_size(), ppc64_rma_size);
 
        for_each_possible_cpu(i) {
-               void *ti;
-
-               ti = alloc_stack(limit, i);
-               paca_ptrs[i]->emergency_sp = ti + THREAD_SIZE;
+               paca_ptrs[i]->emergency_sp = alloc_stack(limit, i) + 
THREAD_SIZE;
 
 #ifdef CONFIG_PPC_BOOK3S_64
                /* emergency stack for NMI exception handling. */
-               ti = alloc_stack(limit, i);
-               paca_ptrs[i]->nmi_emergency_sp = ti + THREAD_SIZE;
+               paca_ptrs[i]->nmi_emergency_sp = alloc_stack(limit, i) + 
THREAD_SIZE;
 
                /* emergency stack for machine check exception handling. */
-               ti = alloc_stack(limit, i);
-               paca_ptrs[i]->mc_emergency_sp = ti + THREAD_SIZE;
+               paca_ptrs[i]->mc_emergency_sp = alloc_stack(limit, i) + 
THREAD_SIZE;
 #endif
        }
 }
-- 
2.13.3