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Diffstat (limited to 'arch/sh/kernel/cpu/sh4/fpu.c')
-rw-r--r--arch/sh/kernel/cpu/sh4/fpu.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/sh/kernel/cpu/sh4/fpu.c b/arch/sh/kernel/cpu/sh4/fpu.c
index e3ea5411da6..d79226fa59d 100644
--- a/arch/sh/kernel/cpu/sh4/fpu.c
+++ b/arch/sh/kernel/cpu/sh4/fpu.c
@@ -483,18 +483,18 @@ BUILD_TRAP_HANDLER(fpu_error)
force_sig(SIGFPE, tsk);
}
-BUILD_TRAP_HANDLER(fpu_state_restore)
+void fpu_state_restore(struct pt_regs *regs)
{
struct task_struct *tsk = current;
- TRAP_HANDLER_DECL;
grab_fpu(regs);
- if (!user_mode(regs)) {
+ if (unlikely(!user_mode(regs))) {
printk(KERN_ERR "BUG: FPU is used in kernel mode.\n");
+ BUG();
return;
}
- if (used_math()) {
+ if (likely(used_math())) {
/* Using the FPU again. */
restore_fpu(tsk);
} else {
@@ -503,4 +503,12 @@ BUILD_TRAP_HANDLER(fpu_state_restore)
set_used_math();
}
set_tsk_thread_flag(tsk, TIF_USEDFPU);
+ tsk->fpu_counter++;
+}
+
+BUILD_TRAP_HANDLER(fpu_state_restore)
+{
+ TRAP_HANDLER_DECL;
+
+ fpu_state_restore(regs);
}