From dc39be5e13d8e0580916d0a56f784668a950d2b2 Mon Sep 17 00:00:00 2001
From: Sandy Huang <hjc@rock-chips.com>
Date: Sun, 28 Apr 2024 14:46:40 +0800
Subject: [PATCH] drm/rockchip: vop2: fix compile warning

[clang] drivers/gpu/drm/rockchip/rockchip_drm_vop2.c:2709:9: warning:
Division by zero [core.DivideZero]

Signed-off-by: Sandy Huang <hjc@rock-chips.com>
Change-Id: I95a28037ab52a10e3d2e333b773ade4f8e2e0c87
---
 drivers/gpu/drm/rockchip/rockchip_drm_vop2.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
index 5a9b78f38e1e..ee982d4f5663 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
@@ -2700,10 +2700,8 @@ static uint16_t vop2_scale_factor(enum scale_mode mode,
 	/*
 	 * A workaround to avoid zero div.
 	 */
-	if ((dst == 1) || (src == 1)) {
-		dst = dst + 1;
-		src = src + 1;
-	}
+	if (dst < 2)
+		dst = 2;
 
 	if ((mode == SCALE_DOWN) && (filter_mode == VOP2_SCALE_DOWN_BIL)) {
 		fac = VOP2_BILI_SCL_DN(src, dst);