linux-kernel - [PATCH 03/13] net: stmmac: dwmac-rk: Allow the driver to probe when phy-supply is not present

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Message-Id: <20181125211907.9895-3-otavio@ossystems.com.br>
Date:   Sun, 25 Nov 2018 19:18:57 -0200
From:   Otavio Salvador <otavio@...ystems.com.br>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org
Cc:     Otavio Salvador <otavio@...ystems.com.br>,
        Jose Abreu <joabreu@...opsys.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        netdev@...r.kernel.org, Alexandre Torgue <alexandre.torgue@...com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        linux-stm32@...md-mailman.stormreply.com,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 03/13] net: stmmac: dwmac-rk: Allow the driver to probe when phy-supply is not present

The phy-supply is an optional regulator, so we should not treat
as an error when phy-supply is not passed in the device tree.

This allows the dwmac-rk driver to probe when phy-supply is not
present in the dts.

Signed-off-by: Otavio Salvador <otavio@...ystems.com.br>
---

 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 7b923362ee55..73855622445b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -1205,7 +1205,7 @@ static int phy_power_on(struct rk_priv_data *bsp_priv, bool enable)
 
 	if (!ldo) {
 		dev_err(dev, "no regulator found\n");
-		return -1;
+		return 0;
 	}
 
 	if (enable) {
-- 
2.19.1