Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (137 commits)
  sh: include empty zero page in romImage
  sh: Make associative cache writes fatal on all SH-4A parts.
  sh: Drop associative writes for SH-4 cache flushes.
  sh: Partial revert of copy/clear_user_highpage() optimizations.
  sh: Add default uImage rule for se7724, ap325rxa, and migor.
  sh: allow runtime pm without suspend/resume callbacks
  sh: mach-ecovec24: Remove un-defined settings for VPU
  sh: mach-ecovec24: LCDC drive ability become high
  sh: fix sh7724 VEU3F resource size
  serial: sh-sci: Fix too early port disabling.
  sh: pfc: pr_info() -> pr_debug() cleanups.
  sh: pfc: Convert from ctrl_xxx() to __raw_xxx() I/O routines.
  sh: Improve kfr2r09 serial port setup code
  sh: Break out SuperH PFC code
  sh: Move KEYSC header file
  sh: convert /proc/cpu/aligmnent, /proc/cpu/kernel_alignment to seq_file
  sh: Add CPG save/restore code for sh7724 R-standby
  sh: Add SDHI power control support to Ecovec
  mfd: Add power control platform data to SDHI driver
  sh: mach-ecovec24: modify address map
  ...

1 files changed, 17 insertions, 9 deletions

diff --git a/arch/sh/include/asm/fpu.h b/arch/sh/include/asm/fpu.h
index 1d3aee04b5c..fb6bbb9b1cc 100644
--- a/arch/sh/include/asm/fpu.h
+++ b/arch/sh/include/asm/fpu.h
@@ -18,16 +18,15 @@ static inline void grab_fpu(struct pt_regs *regs)
 
 struct task_struct;
 
-extern void save_fpu(struct task_struct *__tsk, struct pt_regs *regs);
+extern void save_fpu(struct task_struct *__tsk);
+void fpu_state_restore(struct pt_regs *regs);
 #else
 
+#define save_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)
 
-static inline void save_fpu(struct task_struct *tsk, struct pt_regs *regs)
-{
-	clear_tsk_thread_flag(tsk, TIF_USEDFPU);
-}
 #endif
 
 struct user_regset;
@@ -39,19 +38,28 @@ extern int fpregs_get(struct task_struct *target,
 		      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();