net: stmmac: replace the vlan_fail_q_en 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/20230710090001.303225-8-brgl@bgdev.pl
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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

@@ -560,7 +560,7 @@ static int intel_mgbe_common_data(struct pci_dev *pdev,
 	/* Set the maxmtu to a default of JUMBO_LEN */
 	plat->maxmtu = JUMBO_LEN;
 
-	plat->vlan_fail_q_en = true;
+	plat->flags |= STMMAC_FLAG_VLAN_FAIL_Q_EN;
 
 	/* Use the last Rx queue */
 	plat->vlan_fail_q = plat->rx_queues_to_use - 1;

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

@@ -6923,7 +6923,8 @@ static int stmmac_hw_init(struct stmmac_priv *priv)
 	if (priv->dma_cap.tsoen)
 		dev_info(priv->device, "TSO supported\n");
 
-	priv->hw->vlan_fail_q_en = priv->plat->vlan_fail_q_en;
+	priv->hw->vlan_fail_q_en =
+		(priv->plat->flags & STMMAC_FLAG_VLAN_FAIL_Q_EN);
 	priv->hw->vlan_fail_q = priv->plat->vlan_fail_q;
 
 	/* Run HW quirks, if any */

include/linux/stmmac.h

@@ -210,6 +210,7 @@ struct dwmac4_addrs {
 #define STMMAC_FLAG_HAS_SUN8I			BIT(3)
 #define STMMAC_FLAG_TSO_EN			BIT(4)
 #define STMMAC_FLAG_SERDES_UP_AFTER_PHY_LINKUP	BIT(5)
+#define STMMAC_FLAG_VLAN_FAIL_Q_EN		BIT(6)
 
 struct plat_stmmacenet_data {
 	int bus_id;
@@ -278,7 +279,6 @@ struct plat_stmmacenet_data {
 	bool en_tx_lpi_clockgating;
 	bool rx_clk_runs_in_lpi;
 	int has_xgmac;
-	bool vlan_fail_q_en;
 	u8 vlan_fail_q;
 	unsigned int eee_usecs_rate;
 	struct pci_dev *pdev;