stmmac: platform: Move plat_dat checking earlier

Original code only check/alloc plat_dat for the CONFIG_OF case, this
patch check/alloc it earlier and unconditionally to avoid kernel build
warnings:

drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c:275
stmmac_pltfr_probe() warn: variable dereferenced before check 'plat_dat'

V2: Fix coding style.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 5b0da39..58a1a0a 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -265,6 +265,15 @@ static int stmmac_pltfr_probe(struct platform_device *pdev)
 
        plat_dat = dev_get_platdata(&pdev->dev);
 
+       if (!plat_dat)
+               plat_dat = devm_kzalloc(&pdev->dev,
+                                       sizeof(struct plat_stmmacenet_data),
+                                       GFP_KERNEL);
+       if (!plat_dat) {
+               pr_err("%s: ERROR: no memory", __func__);
+               return  -ENOMEM;
+       }
+
        /* Set default value for multicast hash bins */
        plat_dat->multicast_filter_bins = HASH_TABLE_SIZE;
 
@@ -272,15 +281,6 @@ static int stmmac_pltfr_probe(struct platform_device *pdev)
        plat_dat->unicast_filter_entries = 1;
 
        if (pdev->dev.of_node) {
-               if (!plat_dat)
-                       plat_dat = devm_kzalloc(&pdev->dev,
-                                       sizeof(struct plat_stmmacenet_data),
-                                       GFP_KERNEL);
-               if (!plat_dat) {
-                       pr_err("%s: ERROR: no memory", __func__);
-                       return  -ENOMEM;
-               }
-
                ret = stmmac_probe_config_dt(pdev, plat_dat, &mac);
                if (ret) {
                        pr_err("%s: main dt probe failed", __func__);