compositor: Make backlight_current int32_t to avoid unsigned overflow

Backlight brightness was wrapping around when decrementing from 0.
12 years ago · 7c60912cb9
parent 220819f7b9
commit 7c60912cb9
1 changed files with 1 additions and 1 deletions
--- 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);