[PATCH 5.2 399/413] intel_th: msu: Remove set but not used variable last

[Greg Kroah-Hartman]

From: YueHaibing <yuehaibing@xxxxxxxxxx>

commit 9800db282dff675dd700d5985d90b605c34b5ccd upstream.

Commit aad14ad3cf3a ("intel_th: msu: Add current window tracking") added
the following gcc warning:

> drivers/hwtracing/intel_th/msu.c: In function msc_win_switch:
> drivers/hwtracing/intel_th/msu.c:1389:21: warning: variable last set but
> not used [-Wunused-but-set-variable]

Fix it by removing the variable.

Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
Fixes: aad14ad3cf3a ("intel_th: msu: Add current window tracking")
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20190621161930.60785-3-alexander.shishkin@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/hwtracing/intel_th/msu.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -1400,10 +1400,9 @@ static int intel_th_msc_init(struct msc
 
 static void msc_win_switch(struct msc *msc)
 {
-	struct msc_window *last, *first;
+	struct msc_window *first;
 
 	first = list_first_entry(&msc->win_list, struct msc_window, entry);
-	last = list_last_entry(&msc->win_list, struct msc_window, entry);
 
 	if (msc_is_last_win(msc->cur_win))
 		msc->cur_win = first;