From: Kristian Høgsberg <krh@bitplanet.net>
Date: Fri, 24 May 2013 00:30:26 +0000 (-0400)
Subject: compositor: Make backlight_current int32_t to avoid unsigned overflow
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7c60912cb94b5d4c2598c1c628e074a6c8952fd5;p=platform%2Fupstream%2Fweston.git

compositor: Make backlight_current int32_t to avoid unsigned overflow

Backlight brightness was wrapping around when decrementing from 0.
---

diff --git a/src/compositor.h b/src/compositor.h
index 06476cc..a4292d2 100644
--- a/src/compositor.h
+++ b/src/compositor.h
@@ -197,7 +197,7 @@ struct weston_output {
 	int (*switch_mode)(struct weston_output *output, struct weston_mode *mode);
 
 	/* backlight values are on 0-255 range, where higher is brighter */
-	uint32_t backlight_current;
+	int32_t backlight_current;
 	void (*set_backlight)(struct weston_output *output, uint32_t value);
 	void (*set_dpms)(struct weston_output *output, enum dpms_enum level);