overlay: Fix display of rc6 states

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 9 insertions, 8 deletions

diff --git a/overlay/overlay.c b/overlay/overlay.c
index 9016f205..3390f658 100644
--- a/overlay/overlay.c
+++ b/overlay/overlay.c
@@ -481,24 +481,25 @@ static void show_gpu_freq(struct overlay_context *ctx, struct overlay_gpu_freq *
 		cairo_move_to(ctx->cr, 12, y);
 		cairo_show_text(ctx->cr, buf);
 		if (gf->rc6.rc6_combined && !is_power_of_two(gf->rc6.enabled)) {
+			char *txt;
 			len = 0;
-			sprintf(buf, " (");
+			txt = buf + sprintf(buf, " (");
 			if (gf->rc6.enabled & 1) {
 				if (len)
-					len += sprintf(buf + 3 + len, ", ");
-				len += sprintf(buf + 3 + len, "rc6=%d%%", gf->rc6.rc6);
+					len += sprintf(txt + len, ", ");
+				len += sprintf(txt + len, "rc6=%d%%", gf->rc6.rc6);
 			}
 			if (gf->rc6.enabled & 2) {
 				if (len)
-					len += sprintf(buf + 3 + len, ", ");
-				len += sprintf(buf + 3 + len, "rc6p=%d%%", gf->rc6.rc6p);
+					len += sprintf(txt + len, ", ");
+				len += sprintf(txt + len, "rc6p=%d%%", gf->rc6.rc6p);
 			}
 			if (gf->rc6.enabled & 4) {
 				if (len)
-					len += sprintf(buf + 3 + len, ", ");
-				len += sprintf(buf + 3 + len, "rc6pp=%d%%", gf->rc6.rc6pp);
+					len += sprintf(txt + len, ", ");
+				len += sprintf(txt + len, "rc6pp=%d%%", gf->rc6.rc6pp);
 			}
-			sprintf(buf + 3 + len, ")");
+			sprintf(txt + len, ")");
 			cairo_show_text(ctx->cr, buf);
 		}
 		y += 14;