--- xf86-video-intel-2.99.905/src/sna/sna_accel.c	2013-10-23 10:50:24.000000000 +0200
+++ xf86-video-intel-2.99.905.igel/src/sna/sna_accel.c	2013-10-25 16:42:27.062676488 +0200
@@ -4504,7 +4504,7 @@ sna_put_xybitmap_blt(DrawablePtr drawabl
 	do {
 		int bx1 = (box->x1 - x) & ~7;
 		int bx2 = (box->x2 - x + 7) & ~7;
-		int bw = (bx2 - bx1)/8;
+		int bw = (bx2 - bx1 + 7)/8;
 		int bh = box->y2 - box->y1;
 		int bstride = ALIGN(bw, 2);
 		int src_stride;
@@ -4634,7 +4634,7 @@ sna_put_xypixmap_blt(DrawablePtr drawabl
 		do {
 			int bx1 = (box->x1 - x) & ~7;
 			int bx2 = (box->x2 - x + 7) & ~7;
-			int bw = (bx2 - bx1)/8;
+			int bw = (bx2 - bx1 + 7)/8;
 			int bh = box->y2 - box->y1;
 			int bstride = ALIGN(bw, 2);
 			int src_stride;
@@ -7344,7 +7344,7 @@ sna_copy_bitmap_blt(DrawablePtr _bitmap,
 	do {
 		int bx1 = (box->x1 + sx) & ~7;
 		int bx2 = (box->x2 + sx + 7) & ~7;
-		int bw = (bx2 - bx1)/8;
+		int bw = (bx2 - bx1 + 7)/8;
 		int bh = box->y2 - box->y1;
 		int bstride = ALIGN(bw, 2);
 		int src_stride;
@@ -7512,7 +7512,7 @@ sna_copy_plane_blt(DrawablePtr source, D
 	do {
 		int bx1 = (box->x1 + sx) & ~7;
 		int bx2 = (box->x2 + sx + 7) & ~7;
-		int bw = (bx2 - bx1)/8;
+		int bw = (bx2 - bx1 + 7)/8;
 		int bh = box->y2 - box->y1;
 		int bstride = ALIGN(bw, 2);
 		uint32_t *b;
@@ -12109,7 +12109,7 @@ sna_poly_fill_rect_stippled_1_blt(Drawab
 		do {
 			int bx1 = (r->x - origin->x) & ~7;
 			int bx2 = (r->x + r->width - origin->x + 7) & ~7;
-			int bw = (bx2 - bx1)/8;
+			int bw = (bx2 - bx1 + 7)/8;
 			int bh = r->height;
 			int bstride = ALIGN(bw, 2);
 			int src_stride;
@@ -12258,7 +12258,7 @@ sna_poly_fill_rect_stippled_1_blt(Drawab
 
 				bx1 = (box.x1 - pat.x) & ~7;
 				bx2 = (box.x2 - pat.x + 7) & ~7;
-				bw = (bx2 - bx1)/8;
+				bw = (bx2 - bx1 + 7)/8;
 				bh = box.y2 - box.y1;
 				bstride = ALIGN(bw, 2);
 
@@ -12403,7 +12403,7 @@ sna_poly_fill_rect_stippled_1_blt(Drawab
 
 					bx1 = (box.x1 - pat.x) & ~7;
 					bx2 = (box.x2 - pat.x + 7) & ~7;
-					bw = (bx2 - bx1)/8;
+					bw = (bx2 - bx1 + 7)/8;
 					bh = box.y2 - box.y1;
 					bstride = ALIGN(bw, 2);
 
@@ -14731,7 +14731,7 @@ sna_push_pixels_solid_blt(GCPtr gc,
 	do {
 		int bx1 = (box->x1 - region->extents.x1) & ~7;
 		int bx2 = (box->x2 - region->extents.x1 + 7) & ~7;
-		int bw = (bx2 - bx1)/8;
+		int bw = (bx2 - bx1 + 7)/8;
 		int bh = box->y2 - box->y1;
 		int bstride = ALIGN(bw, 2);
 		int src_stride;