Change in coreboot[master]: rockchip/rk3399: fix rk_mipi_dsi_phy_init err

[Julius Werner (Code Review)]

Julius Werner has submitted this change and it was merged. ( https://review.coreboot.org/19903 )

Change subject: rockchip/rk3399: fix rk_mipi_dsi_phy_init err
......................................................................

rockchip/rk3399: fix rk_mipi_dsi_phy_init err

This patch fix rk_mipi_dsi_phy_init error return.

Change-Id: Ie260975ad6ed26c37aa8bb65dfcef4db2407a2da
Signed-off-by: Nickey Yang 
Reviewed-on: https://review.coreboot.org/19903
Tested-by: build bot (Jenkins) 
Reviewed-by: Julius Werner 
---
M src/soc/rockchip/rk3399/mipi.c
1 file changed, 4 insertions(+), 3 deletions(-)

Approvals:
  Julius Werner: Looks good to me, approved
  build bot (Jenkins): Verified

diff --git a/src/soc/rockchip/rk3399/mipi.c b/src/soc/rockchip/rk3399/mipi.c
index 5c8f4c2..9491b91 100644
--- a/src/soc/rockchip/rk3399/mipi.c
+++ b/src/soc/rockchip/rk3399/mipi.c
@@ -95,7 +95,7 @@

static int rk_mipi_dsi_phy_init(struct rk_mipi_dsi *dsi)
 {
-	int ret, testdin, vco;
+	int testdin, vco;

int lane_mbps = div_round_up(dsi->lane_bps, USECS_PER_SEC);
    vco = (lane_mbps < 200) ? 0 : (lane_mbps + 100) / 200;
@@ -156,7 +156,7 @@

write32(&mipi_regs->dsi_phy_rstz, PHY_ENFORCEPLL | PHY_ENABLECLK |
    				  PHY_UNRSTZ | PHY_UNSHUTDOWNZ);
-	return ret;
+	return 0;
 }

static inline int mipi_dsi_pixel_format_to_bpp(enum mipi_dsi_pixel_format fmt)
@@ -421,7 +421,8 @@
    rk_mipi_dsi_dphy_timing_config(&rk_mipi);
    rk_mipi_dsi_dphy_interface_config(&rk_mipi);
    rk_mipi_dsi_clear_err(&rk_mipi);
-	rk_mipi_dsi_phy_init(&rk_mipi);
+	if (rk_mipi_dsi_phy_init(&rk_mipi) < 0)
+		return;
    rk_mipi_dsi_wait_for_two_frames(&rk_mipi, edid);

rk_mipi_dsi_set_mode(&rk_mipi, MIPI_DSI_CMD_MODE);