1 files changed, 27 insertions, 7 deletions

diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index bbf3da012afd..f74695075e64 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -78,6 +78,14 @@ static void vfp_thread_exit(struct thread_info *thread)
         put_cpu();
 }
 
+static void vfp_thread_copy(struct thread_info *thread)
+{
+        struct thread_info *parent = current_thread_info();
+
+        vfp_sync_hwstate(parent);
+        thread->vfpstate = parent->vfpstate;
+}
+
 /*
  * When this function is called with the following 'cmd's, the following
  * is true while this function is being run:
@@ -104,12 +112,17 @@ static void vfp_thread_exit(struct thread_info *thread)
 static int vfp_notifier(struct notifier_block *self, unsigned long cmd, void *v)
 {
         struct thread_info *thread = v;
+        u32 fpexc;
+#ifdef CONFIG_SMP
+        unsigned int cpu;
+#endif
 
-        if (likely(cmd == THREAD_NOTIFY_SWITCH)) {
-                u32 fpexc = fmrx(FPEXC);
+        switch (cmd) {
+        case THREAD_NOTIFY_SWITCH:
+                fpexc = fmrx(FPEXC);
 
 #ifdef CONFIG_SMP
-                unsigned int cpu = thread->cpu;
+                cpu = thread->cpu;
 
                 /*
                  * On SMP, if VFP is enabled, save the old state in
@@ -134,13 +147,20 @@ static int vfp_notifier(struct notifier_block *self, unsigned long cmd, void *v)
                  * old state.
                  */
                 fmxr(FPEXC, fpexc & ~FPEXC_EN);
-                return NOTIFY_DONE;
-        }
+                break;
 
-        if (cmd == THREAD_NOTIFY_FLUSH)
+        case THREAD_NOTIFY_FLUSH:
                 vfp_thread_flush(thread);
-        else
+                break;
+
+        case THREAD_NOTIFY_EXIT:
                 vfp_thread_exit(thread);
+                break;
+
+        case THREAD_NOTIFY_COPY:
+                vfp_thread_copy(thread);
+                break;
+        }
 
         return NOTIFY_DONE;
 }