From 37c80d15ff4bf7526caf5de8b8cab17ac8769d4c Mon Sep 17 00:00:00 2001 From: David Wu Date: Mon, 17 May 2021 12:40:35 -0300 Subject: [PATCH] net: stmmac: dwmac-rk: Check platform-specific ops Add a check for non-null struct rk_gmac_ops for the configured PHY interface mode, failing if unsupported. Signed-off-by: David Wu [Ezequiel: Refactor so it fails if unsupported] Signed-off-by: Ezequiel Garcia Signed-off-by: David S. Miller --- drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 31 ++++++++++++++++++++++++-- 1 file changed, 29 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c index 56034f2..791c13d 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c @@ -1342,11 +1342,36 @@ static struct rk_priv_data *rk_gmac_setup(struct platform_device *pdev, return bsp_priv; } +static int rk_gmac_check_ops(struct rk_priv_data *bsp_priv) +{ + switch (bsp_priv->phy_iface) { + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII_RXID: + case PHY_INTERFACE_MODE_RGMII_TXID: + if (!bsp_priv->ops->set_to_rgmii) + return -EINVAL; + break; + case PHY_INTERFACE_MODE_RMII: + if (!bsp_priv->ops->set_to_rmii) + return -EINVAL; + break; + default: + dev_err(&bsp_priv->pdev->dev, + "unsupported interface %d", bsp_priv->phy_iface); + } + return 0; +} + static int rk_gmac_powerup(struct rk_priv_data *bsp_priv) { int ret; struct device *dev = &bsp_priv->pdev->dev; + ret = rk_gmac_check_ops(bsp_priv); + if (ret) + return ret; + ret = gmac_clk_enable(bsp_priv, true); if (ret) return ret; @@ -1417,10 +1442,12 @@ static void rk_fix_speed(void *priv, unsigned int speed) case PHY_INTERFACE_MODE_RGMII_ID: case PHY_INTERFACE_MODE_RGMII_RXID: case PHY_INTERFACE_MODE_RGMII_TXID: - bsp_priv->ops->set_rgmii_speed(bsp_priv, speed); + if (bsp_priv->ops->set_rgmii_speed) + bsp_priv->ops->set_rgmii_speed(bsp_priv, speed); break; case PHY_INTERFACE_MODE_RMII: - bsp_priv->ops->set_rmii_speed(bsp_priv, speed); + if (bsp_priv->ops->set_rmii_speed) + bsp_priv->ops->set_rmii_speed(bsp_priv, speed); break; default: dev_err(dev, "unsupported interface %d", bsp_priv->phy_iface); -- 2.7.4