[PATCH] drm/i915: Fix cursor visibility check with negative coordinates

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From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

When the cursor x coordinate is exactly -cursor_width, the cursor is
invisible. And obviously the same holds for the y coordinate and
cursor_height.

Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/i915/intel_display.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 17fe7ed..42e65ce 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6857,7 +6857,7 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc,
 		base = 0;
 
 	if (x < 0) {
-		if (x + intel_crtc->cursor_width < 0)
+		if (x + intel_crtc->cursor_width <= 0)
 			base = 0;
 
 		pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
@@ -6866,7 +6866,7 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc,
 	pos |= x << CURSOR_X_SHIFT;
 
 	if (y < 0) {
-		if (y + intel_crtc->cursor_height < 0)
+		if (y + intel_crtc->cursor_height <= 0)
 			base = 0;
 
 		pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
-- 
1.8.1.5

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