sh: Use boot_cpu_data for FPU tests in sigcontext paths.

We do not want to use smp_processor_id() from these paths, as they trip
preempt BUGs. Switch the test over to the boot cpu directly.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c
index 6729703..55d1f81 100644 (file)
--- a/arch/sh/kernel/signal_32.c
+++ b/arch/sh/kernel/signal_32.c
@@ -145,7 +145,7 @@ static inline int restore_sigcontext_fpu(struct sigcontext __user *sc)
 {
        struct task_struct *tsk = current;
 
-       if (!(current_cpu_data.flags & CPU_HAS_FPU))
+       if (!(boot_cpu_data.flags & CPU_HAS_FPU))
                return 0;
 
        set_used_math();
@@ -158,7 +158,7 @@ static inline int save_sigcontext_fpu(struct sigcontext __user *sc,
 {
        struct task_struct *tsk = current;
 
-       if (!(current_cpu_data.flags & CPU_HAS_FPU))
+       if (!(boot_cpu_data.flags & CPU_HAS_FPU))
                return 0;
 
        if (!used_math()) {
@@ -199,7 +199,7 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *r0_p
 #undef COPY
 
 #ifdef CONFIG_SH_FPU
-       if (current_cpu_data.flags & CPU_HAS_FPU) {
+       if (boot_cpu_data.flags & CPU_HAS_FPU) {
                int owned_fp;
                struct task_struct *tsk = current;