[PATCH net] net: fec: only stop PTP if it was initialized

[phucduc.bui@gmail.com]

From: bui duc phuc <phucduc.bui@gmail.com>

fec_ptp_init() is only called when fep->bufdesc_ex is available.
However, fec_probe() unconditionally calls fec_ptp_stop() on the
failed_init path.

Check fep->bufdesc_ex before calling fec_ptp_stop() to avoid stopping
PTP when it was not initialized.

Fixes: 32cba57ba74b ("net: fec: introduce fec_ptp_stop and use in probe fail path")
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
 drivers/net/ethernet/freescale/fec_main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index ced4dbf8cd90..7a87f40d12d9 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -5457,7 +5457,8 @@ fec_probe(struct platform_device *pdev)
 failed_irq:
 	fec_enet_deinit(ndev);
 failed_init:
-	fec_ptp_stop(pdev);
+	if (fep->bufdesc_ex)
+		fec_ptp_stop(pdev);
 failed_reset:
 	pm_runtime_put_noidle(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
-- 
2.43.0