diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index 623ebc5..7a00720 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -71,19 +71,22 @@ static int stmmac_probe_config_dt(struct platform_device *pdev, plat->force_sf_dma_mode = 1; } - dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg), GFP_KERNEL); - if (!dma_cfg) - return -ENOMEM; - - plat->dma_cfg = dma_cfg; - of_property_read_u32(np, "snps,pbl", &dma_cfg->pbl); - dma_cfg->fixed_burst = of_property_read_bool(np, "snps,fixed-burst"); - dma_cfg->mixed_burst = of_property_read_bool(np, "snps,mixed-burst"); + if (of_find_property(np, "snps,pbl", NULL)) { + dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg), + GFP_KERNEL); + if (!dma_cfg) + return -ENOMEM; + plat->dma_cfg = dma_cfg; + of_property_read_u32(np, "snps,pbl", &dma_cfg->pbl); + dma_cfg->fixed_burst = + of_property_read_bool(np, "snps,fixed-burst"); + dma_cfg->mixed_burst = + of_property_read_bool(np, "snps,mixed-burst"); + } plat->force_thresh_dma_mode = of_property_read_bool(np, "snps,force_thresh_dma_mode"); if (plat->force_thresh_dma_mode) { plat->force_sf_dma_mode = 0; pr_warn("force_sf_dma_mode is ignored if force_thresh_dma_mode is set."); - } return 0; } |