add REDIRECT

hc

2024-10-09 05e59e5fb0064c97a1c10921ecd549f2d4a58565

 kernel/drivers/gpu/drm/rockchip/rk628/rk628_dsi.c
..
..
@@ -637,6 +637,9 @@
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 	u32 val;
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 	int ret;
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+	if (!vrefresh)
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+		return -EINVAL;
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+
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 	ret = regmap_read_poll_timeout(dsi->regmap,
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 				       dsi->reg_base + DSI_CMD_PKT_STATUS,
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 				       val, !(val & GEN_RD_CMD_BUSY),