sh: comment tidying for sh64->sh migration.

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

1 files changed, 16 insertions, 13 deletions

diff --git a/arch/sh/kernel/process_64.c b/arch/sh/kernel/process_64.c
index 973dd1a3d292..cff3b7dc9c56 100644
--- a/arch/sh/kernel/process_64.c
+++ b/arch/sh/kernel/process_64.c
@@ -421,19 +421,22 @@ int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
  */
 void exit_thread(void)
 {
-        /* See arch/sparc/kernel/process.c for the precedent for doing this -- RPC.
-
-           The SH-5 FPU save/restore approach relies on last_task_used_math
-           pointing to a live task_struct.  When another task tries to use the
-           FPU for the 1st time, the FPUDIS trap handling (see
-           arch/sh64/kernel/fpu.c) will save the existing FPU state to the
-           FP regs field within last_task_used_math before re-loading the new
-           task's FPU state (or initialising it if the FPU has been used
-           before).  So if last_task_used_math is stale, and its page has already been
-           re-allocated for another use, the consequences are rather grim. Unless we
-           null it here, there is no other path through which it would get safely
-           nulled. */
-
+        /*
+         * See arch/sparc/kernel/process.c for the precedent for doing
+         * this -- RPC.
+         *
+         * The SH-5 FPU save/restore approach relies on
+         * last_task_used_math pointing to a live task_struct.  When
+         * another task tries to use the FPU for the 1st time, the FPUDIS
+         * trap handling (see arch/sh/kernel/cpu/sh5/fpu.c) will save the
+         * existing FPU state to the FP regs field within
+         * last_task_used_math before re-loading the new task's FPU state
+         * (or initialising it if the FPU has been used before).  So if
+         * last_task_used_math is stale, and its page has already been
+         * re-allocated for another use, the consequences are rather
+         * grim. Unless we null it here, there is no other path through
+         * which it would get safely nulled.
+         */
 #ifdef CONFIG_SH_FPU
         if (last_task_used_math == current) {
                 last_task_used_math = NULL;