[PATCH net v2] stmmac: dwmac-mediatek: fix clock issue

[Biao Huang]

Since clocks are handled in mediatek_dwmac_clks_config(),
remove the clocks configuration in init()/exit(), and
invoke mediatek_dwmac_clks_config instead.

This issue is found in suspend/resume test.

Fixes: 3186bdad97d5 ("stmmac: dwmac-mediatek: add platform level clocks management")
Signed-off-by: Biao Huang <biao.huang at mediatek.com>
---
 .../ethernet/stmicro/stmmac/dwmac-mediatek.c  | 32 ++++++-------------
 1 file changed, 10 insertions(+), 22 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
index 6ff88df58767..6d82cf2658e0 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
@@ -576,32 +576,12 @@ static int mediatek_dwmac_init(struct platform_device *pdev, void *priv)
 		}
 	}
 
-	ret = clk_bulk_prepare_enable(variant->num_clks, plat->clks);
-	if (ret) {
-		dev_err(plat->dev, "failed to enable clks, err = %d\n", ret);
-		return ret;
-	}
-
-	ret = clk_prepare_enable(plat->rmii_internal_clk);
-	if (ret) {
-		dev_err(plat->dev, "failed to enable rmii internal clk, err = %d\n", ret);
-		goto err_clk;
-	}
-
 	return 0;
-
-err_clk:
-	clk_bulk_disable_unprepare(variant->num_clks, plat->clks);
-	return ret;
 }
 
 static void mediatek_dwmac_exit(struct platform_device *pdev, void *priv)
 {
-	struct mediatek_dwmac_plat_data *plat = priv;
-	const struct mediatek_dwmac_variant *variant = plat->variant;
-
-	clk_disable_unprepare(plat->rmii_internal_clk);
-	clk_bulk_disable_unprepare(variant->num_clks, plat->clks);
+	/* nothing to do now */
 }
 
 static int mediatek_dwmac_clks_config(void *priv, bool enabled)
@@ -712,13 +692,21 @@ static int mediatek_dwmac_probe(struct platform_device *pdev)
 	mediatek_dwmac_common_data(pdev, plat_dat, priv_plat);
 	mediatek_dwmac_init(pdev, priv_plat);
 
+	ret = mediatek_dwmac_clks_config(priv_plat, true);
+	if (ret)
+		return ret;
+
 	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
 	if (ret) {
 		stmmac_remove_config_dt(pdev, plat_dat);
-		return ret;
+		goto err_drv_probe;
 	}
 
 	return 0;
+
+err_drv_probe:
+	mediatek_dwmac_clks_config(priv_plat, false);
+	return ret;
 }
 
 static const struct of_device_id mediatek_dwmac_match[] = {
-- 
2.25.1