[PATCH] phy: fsl-lynx-10g: propagate PCVT enable errors

[kr494167 at gmail.com]

From: surendra <kr494167 at gmail.com>

lynx_10g_set_mode() currently ignores failures from
lynx_10g_lane_enable_pcvt(). It then updates the lane mode and reports
success even though the protocol converter may remain disabled.

Propagate the error and leave the previous lane mode intact so the caller
can handle the failed reconfiguration.

Signed-off-by: surendra <kr494167 at gmail.com>
---
 drivers/phy/freescale/phy-fsl-lynx-10g.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/freescale/phy-fsl-lynx-10g.c b/drivers/phy/freescale/phy-fsl-lynx-10g.c
index 38def160ef1a..9740b08700c4 100644
--- a/drivers/phy/freescale/phy-fsl-lynx-10g.c
+++ b/drivers/phy/freescale/phy-fsl-lynx-10g.c
@@ -1231,7 +1231,9 @@ static int lynx_10g_set_mode(struct phy *phy, enum phy_mode mode, int submode)
 
 	lynx_10g_lane_change_proto_conf(lane, lane_mode);
 	lynx_10g_lane_remap_pll(lane, lane_mode);
-	WARN_ON(lynx_10g_lane_enable_pcvt(lane, lane_mode));
+	err = lynx_10g_lane_enable_pcvt(lane, lane_mode);
+	if (err)
+		goto out;
 
 	lane->mode = lane_mode;
 
-- 
2.55.0