stmmac: pci: allocate memory resources dynamically

Instead of using global variables we are going to use dynamically allocated
memory. It allows to append a support of more than one ethernet adapter which
might have different settings simultaniously.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 31 insertions, 24 deletions

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
index 77a6d68f7189..054520d67de4 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
@@ -26,34 +26,26 @@
 #include <linux/pci.h>
 #include "stmmac.h"
 
-static struct plat_stmmacenet_data plat_dat;
-static struct stmmac_mdio_bus_data mdio_data;
-static struct stmmac_dma_cfg dma_cfg;
-
-static void stmmac_default_data(void)
+static void stmmac_default_data(struct plat_stmmacenet_data *plat)
 {
-        memset(&plat_dat, 0, sizeof(struct plat_stmmacenet_data));
-
-        plat_dat.bus_id = 1;
-        plat_dat.phy_addr = 0;
-        plat_dat.interface = PHY_INTERFACE_MODE_GMII;
-        plat_dat.clk_csr = 2;   /* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */
-        plat_dat.has_gmac = 1;
-        plat_dat.force_sf_dma_mode = 1;
+        plat->bus_id = 1;
+        plat->phy_addr = 0;
+        plat->interface = PHY_INTERFACE_MODE_GMII;
+        plat->clk_csr = 2;      /* clk_csr_i = 20-35MHz & MDC = clk_csr_i/16 */
+        plat->has_gmac = 1;
+        plat->force_sf_dma_mode = 1;
 
-        mdio_data.phy_reset = NULL;
-        mdio_data.phy_mask = 0;
-        plat_dat.mdio_bus_data = &mdio_data;
+        plat->mdio_bus_data->phy_reset = NULL;
+        plat->mdio_bus_data->phy_mask = 0;
 
-        dma_cfg.pbl = 32;
-        dma_cfg.burst_len = DMA_AXI_BLEN_256;
-        plat_dat.dma_cfg = &dma_cfg;
+        plat->dma_cfg->pbl = 32;
+        plat->dma_cfg->burst_len = DMA_AXI_BLEN_256;
 
         /* Set default value for multicast hash bins */
-        plat_dat.multicast_filter_bins = HASH_TABLE_SIZE;
+        plat->multicast_filter_bins = HASH_TABLE_SIZE;
 
         /* Set default value for unicast filter entries */
-        plat_dat.unicast_filter_entries = 1;
+        plat->unicast_filter_entries = 1;
 }
 
 /**
@@ -71,10 +63,26 @@ static void stmmac_default_data(void)
 static int stmmac_pci_probe(struct pci_dev *pdev,
                             const struct pci_device_id *id)
 {
+        struct plat_stmmacenet_data *plat;
         struct stmmac_priv *priv;
         int i;
         int ret;
 
+        plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
+        if (!plat)
+                return -ENOMEM;
+
+        plat->mdio_bus_data = devm_kzalloc(&pdev->dev,
+                                           sizeof(*plat->mdio_bus_data),
+                                           GFP_KERNEL);
+        if (!plat->mdio_bus_data)
+                return -ENOMEM;
+
+        plat->dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*plat->dma_cfg),
+                                     GFP_KERNEL);
+        if (!plat->dma_cfg)
+                return -ENOMEM;
+
         /* Enable pci device */
         ret = pcim_enable_device(pdev);
         if (ret) {
@@ -95,10 +103,9 @@ static int stmmac_pci_probe(struct pci_dev *pdev,
 
         pci_set_master(pdev);
 
-        stmmac_default_data();
+        stmmac_default_data(plat);
 
-        priv = stmmac_dvr_probe(&pdev->dev, &plat_dat,
-                                pcim_iomap_table(pdev)[i]);
+        priv = stmmac_dvr_probe(&pdev->dev, plat, pcim_iomap_table(pdev)[i]);
         if (IS_ERR(priv)) {
                 dev_err(&pdev->dev, "%s: main driver probe failed\n", __func__);
                 return PTR_ERR(priv);