1 files changed, 26 insertions, 29 deletions

diff --git a/arch/sh/include/asm/fpu.h b/arch/sh/include/asm/fpu.h
index 1d3aee0..06c4281 100644
--- a/arch/sh/include/asm/fpu.h
+++ b/arch/sh/include/asm/fpu.h
@@ -2,8 +2,8 @@
 #define __ASM_SH_FPU_H
 
 #ifndef __ASSEMBLY__
-#include <linux/preempt.h>
-#include <asm/ptrace.h>
+
+struct task_struct;
 
 #ifdef CONFIG_SH_FPU
 static inline void release_fpu(struct pt_regs *regs)
@@ -16,59 +16,56 @@ static inline void grab_fpu(struct pt_regs *regs)
 	regs->sr &= ~SR_FD;
 }
 
-struct task_struct;
-
-extern void save_fpu(struct task_struct *__tsk, struct pt_regs *regs);
+extern void save_fpu(struct task_struct *__tsk);
+extern void restore_fpu(struct task_struct *__tsk);
+extern void fpu_state_restore(struct pt_regs *regs);
+extern void __fpu_state_restore(void);
 #else
-
-#define release_fpu(regs)	do { } while (0)
-#define grab_fpu(regs)		do { } while (0)
-
-static inline void save_fpu(struct task_struct *tsk, struct pt_regs *regs)
-{
-	clear_tsk_thread_flag(tsk, TIF_USEDFPU);
-}
+#define save_fpu(tsk)			do { } while (0)
+#define restore_fpu(tsk)		do { } while (0)
+#define release_fpu(regs)		do { } while (0)
+#define grab_fpu(regs)			do { } while (0)
+#define fpu_state_restore(regs)		do { } while (0)
+#define __fpu_state_restore(regs)	do { } while (0)
 #endif
 
 struct user_regset;
 
 extern int do_fpu_inst(unsigned short, struct pt_regs *);
+extern int init_fpu(struct task_struct *);
 
 extern int fpregs_get(struct task_struct *target,
 		      const struct user_regset *regset,
 		      unsigned int pos, unsigned int count,
 		      void *kbuf, void __user *ubuf);
 
+static inline void __unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs)
+{
+	if (task_thread_info(tsk)->status & TS_USEDFPU) {
+		task_thread_info(tsk)->status &= ~TS_USEDFPU;
+		save_fpu(tsk);
+		release_fpu(regs);
+	} else
+		tsk->fpu_counter = 0;
+}
+
 static inline void unlazy_fpu(struct task_struct *tsk, struct pt_regs *regs)
 {
 	preempt_disable();
-	if (test_tsk_thread_flag(tsk, TIF_USEDFPU))
-		save_fpu(tsk, regs);
+	__unlazy_fpu(tsk, regs);
 	preempt_enable();
 }
 
 static inline void clear_fpu(struct task_struct *tsk, struct pt_regs *regs)
 {
 	preempt_disable();
-	if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) {
-		clear_tsk_thread_flag(tsk, TIF_USEDFPU);
+	if (task_thread_info(tsk)->status & TS_USEDFPU) {
+		task_thread_info(tsk)->status &= ~TS_USEDFPU;
 		release_fpu(regs);
 	}
 	preempt_enable();
 }
 
-static inline int init_fpu(struct task_struct *tsk)
-{
-	if (tsk_used_math(tsk)) {
-		if ((boot_cpu_data.flags & CPU_HAS_FPU) && tsk == current)
-			unlazy_fpu(tsk, task_pt_regs(tsk));
-		return 0;
-	}
-
-	set_stopped_child_used_math(tsk);
-	return 0;
-}
-
 #endif /* __ASSEMBLY__ */
 
 #endif /* __ASM_SH_FPU_H */