[PATCH 4.9 093/125] wil6210: fix temperature debugfs

[Greg Kroah-Hartman]

From: Dedy Lansky <dlansky@xxxxxxxxxxxxxx>

[ Upstream commit 6d9eb7ebae3d7e951bc0999235ae7028eb4cae4f ]

For negative temperatures, "temp" debugfs is showing wrong values.
Use signed types so proper calculations is done for sub zero
temperatures.

Signed-off-by: Dedy Lansky <dlansky@xxxxxxxxxxxxxx>
Signed-off-by: Maya Erez <merez@xxxxxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/net/wireless/ath/wil6210/debugfs.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/net/wireless/ath/wil6210/debugfs.c
+++ b/drivers/net/wireless/ath/wil6210/debugfs.c
@@ -1091,7 +1091,7 @@ static const struct file_operations fops
 };
 
 /*---------temp------------*/
-static void print_temp(struct seq_file *s, const char *prefix, u32 t)
+static void print_temp(struct seq_file *s, const char *prefix, s32 t)
 {
 	switch (t) {
 	case 0:
@@ -1099,7 +1099,8 @@ static void print_temp(struct seq_file *
 		seq_printf(s, "%s N/A\n", prefix);
 	break;
 	default:
-		seq_printf(s, "%s %d.%03d\n", prefix, t / 1000, t % 1000);
+		seq_printf(s, "%s %s%d.%03d\n", prefix, (t < 0 ? "-" : ""),
+			   abs(t / 1000), abs(t % 1000));
 		break;
 	}
 }
@@ -1107,7 +1108,7 @@ static void print_temp(struct seq_file *
 static int wil_temp_debugfs_show(struct seq_file *s, void *data)
 {
 	struct wil6210_priv *wil = s->private;
-	u32 t_m, t_r;
+	s32 t_m, t_r;
 	int rc = wmi_get_temperature(wil, &t_m, &t_r);
 
 	if (rc) {