[RESEND PATCH] intel_th: msu: Fix unused variable warning on arm64 platform

[Shaokun Zhang]

drivers/hwtracing/intel_th/msu.c: In function âmsc_buffer_win_allocâ:
drivers/hwtracing/intel_th/msu.c:783:21: warning: unused variable âiâ [-Wunused-variable]
  int ret = -ENOMEM, i;
                     ^
drivers/hwtracing/intel_th/msu.c: In function âmsc_buffer_win_freeâ:
drivers/hwtracing/intel_th/msu.c:863:6: warning: unused variable âiâ [-Wunused-variable]
  int i;
      ^
Fix this compiler warning on arm64 platform.

Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Shaokun Zhang <zhangshaokun@xxxxxxxxxxxxx>
---
 drivers/hwtracing/intel_th/msu.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/hwtracing/intel_th/msu.c b/drivers/hwtracing/intel_th/msu.c
index 81bb54fa3ce8..833a5a8f13ad 100644
--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -780,7 +780,10 @@ static int __msc_buffer_win_alloc(struct msc_window *win,
 static int msc_buffer_win_alloc(struct msc *msc, unsigned int nr_blocks)
 {
 	struct msc_window *win;
-	int ret = -ENOMEM, i;
+	int ret = -ENOMEM;
+#ifdef CONFIG_X86
+	int i;
+#endif
 
 	if (!nr_blocks)
 		return 0;
@@ -860,7 +863,9 @@ static void __msc_buffer_win_free(struct msc *msc, struct msc_window *win)
  */
 static void msc_buffer_win_free(struct msc *msc, struct msc_window *win)
 {
+#ifdef CONFIG_X86
 	int i;
+#endif
 
 	msc->nr_pages -= win->nr_blocks;
 
-- 
2.7.4