[PATCH] net: ethernet: ravb: Fix release of refclk

From: Adam Ford
Date: Sat Apr 17 2021 - 09:23:51 EST


The call to clk_disable_unprepare() can happen before priv is
initialized. This means moving clk_disable_unprepare out of
out_release into a new label.

Fixes: 8ef7adc6beb2("net: ethernet: ravb: Enable optional refclk")
Signed-off-by: Adam Ford <aford173@xxxxxxxxx>

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 8c84c40ab9a0..64a545c98ff2 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -2173,7 +2173,7 @@ static int ravb_probe(struct platform_device *pdev)
/* Set GTI value */
error = ravb_set_gti(ndev);
if (error)
- goto out_release;
+ goto out_unprepare_refclk;

/* Request GTI loading */
ravb_modify(ndev, GCCR, GCCR_LTI, GCCR_LTI);
@@ -2192,7 +2192,7 @@ static int ravb_probe(struct platform_device *pdev)
"Cannot allocate desc base address table (size %d bytes)\n",
priv->desc_bat_size);
error = -ENOMEM;
- goto out_release;
+ goto out_unprepare_refclk;
}
for (q = RAVB_BE; q < DBAT_ENTRY_NUM; q++)
priv->desc_bat[q].die_dt = DT_EOS;
@@ -2252,8 +2252,9 @@ static int ravb_probe(struct platform_device *pdev)
/* Stop PTP Clock driver */
if (chip_id != RCAR_GEN2)
ravb_ptp_stop(ndev);
-out_release:
+out_unprepare_refclk:
clk_disable_unprepare(priv->refclk);
+out_release:
free_netdev(ndev);

pm_runtime_put(&pdev->dev);
--
2.25.1