net: stmmac: replace the sph_disable field with a flag

Drop the boolean field of the plat_stmmacenet_data structure in favor of a
simple bitfield flag.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andrew Halaney <ahalaney@redhat.com>
Link: https://lore.kernel.org/r/20230710090001.303225-3-brgl@bgdev.plReviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c

@@ -359,7 +359,7 @@ static int tegra_eqos_probe(struct platform_device *pdev,
 	data->fix_mac_speed = tegra_eqos_fix_speed;
 	data->init = tegra_eqos_init;
 	data->bsp_priv = eqos;
-	data->sph_disable = 1;
+	data->flags |= STMMAC_FLAG_SPH_DISABLE;
 
 	err = tegra_eqos_init(pdev, eqos);
 	if (err < 0)

drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c

@@ -459,7 +459,7 @@ static int intel_mgbe_common_data(struct pci_dev *pdev,
 	plat->has_gmac4 = 1;
 	plat->force_sf_dma_mode = 0;
 	plat->tso_en = 1;
-	plat->sph_disable = 1;
+	plat->flags |= STMMAC_FLAG_SPH_DISABLE;
 
 	/* Multiplying factor to the clk_eee_i clock time
 	 * period to make it closer to 100 ns. This value

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

@@ -7258,7 +7258,8 @@ int stmmac_dvr_probe(struct device *device,
 		dev_info(priv->device, "TSO feature enabled\n");
 	}
 
-	if (priv->dma_cap.sphen && !priv->plat->sph_disable) {
+	if (priv->dma_cap.sphen &&
+	    !(priv->plat->flags & STMMAC_FLAG_SPH_DISABLE)) {
 		ndev->hw_features |= NETIF_F_GRO;
 		priv->sph_cap = true;
 		priv->sph = priv->sph_cap;

include/linux/stmmac.h

@@ -205,6 +205,7 @@ struct dwmac4_addrs {
 };
 
 #define STMMAC_FLAG_HAS_INTEGRATED_PCS		BIT(0)
+#define STMMAC_FLAG_SPH_DISABLE			BIT(1)
 
 struct plat_stmmacenet_data {
 	int bus_id;
@@ -292,7 +293,6 @@ struct plat_stmmacenet_data {
 	int msi_rx_base_vec;
 	int msi_tx_base_vec;
 	bool use_phy_wol;
-	bool sph_disable;
 	bool serdes_up_after_phy_linkup;
 	const struct dwmac4_addrs *dwmac4_addrs;
 	unsigned int flags;