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stmmac: make stmmac_probe_config_dt return the platform data struct

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Since stmmac_probe_config_dt() allocates the platform data structure
it is cleaner if it just returned this structure directly. This
function will later be used in the probe function in dwmac-* drivers.

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Joachim Eastwood 2015-07-17 00:26:08 +02:00 committed by David S. Miller
parent f396cb0121
commit b0003ead75
1 changed files with 12 additions and 16 deletions
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28
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
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@ -104,9 +104,8 @@ static int dwmac1000_validate_ucast_entries(int ucast_entries)
* this function is to read the driver parameters from device-tree and
* set some private fields that will be used by the main at runtime.
*/
static int stmmac_probe_config_dt(struct platform_device *pdev,
struct plat_stmmacenet_data **plat_dat,
const char **mac)
static struct plat_stmmacenet_data *
stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
{
struct device_node *np = pdev->dev.of_node;
struct plat_stmmacenet_data *plat;
@ -115,9 +114,7 @@ static int stmmac_probe_config_dt(struct platform_device *pdev,
plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
if (!plat)
return -ENOMEM;
*plat_dat = plat;
return ERR_PTR(-ENOMEM);
data = of_device_get_match_data(&pdev->dev);
if (data) {
@ -156,7 +153,7 @@ static int stmmac_probe_config_dt(struct platform_device *pdev,
/* If phy-handle is not specified, check if we have a fixed-phy */
if (!plat->phy_node && of_phy_is_fixed_link(np)) {
if ((of_phy_register_fixed_link(np) < 0))
return -ENODEV;
return ERR_PTR(-ENODEV);
plat->phy_node = of_node_get(np);
}
@ -233,7 +230,7 @@ static int stmmac_probe_config_dt(struct platform_device *pdev,
GFP_KERNEL);
if (!dma_cfg) {
of_node_put(np);
return -ENOMEM;
return ERR_PTR(-ENOMEM);
}
plat->dma_cfg = dma_cfg;
of_property_read_u32(np, "snps,pbl", &dma_cfg->pbl);
@ -251,14 +248,13 @@ static int stmmac_probe_config_dt(struct platform_device *pdev,
pr_warn("force_sf_dma_mode is ignored if force_thresh_dma_mode is set.");
}
return 0;
return plat;
}
#else
static int stmmac_probe_config_dt(struct platform_device *pdev,
struct plat_stmmacenet_data **plat,
const char **mac)
static struct plat_stmmacenet_data *
stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
{
return -ENOSYS;
return ERR_PTR(-ENOSYS);
}
#endif /* CONFIG_OF */
@ -325,10 +321,10 @@ int stmmac_pltfr_probe(struct platform_device *pdev)
return ret;
if (pdev->dev.of_node) {
ret = stmmac_probe_config_dt(pdev, &plat_dat, &stmmac_res.mac);
if (ret) {
plat_dat = stmmac_probe_config_dt(pdev, &stmmac_res.mac);
if (IS_ERR(plat_dat)) {
dev_err(&pdev->dev, "dt configuration failed\n");
return ret;
return PTR_ERR(plat_dat);
}
} else {
plat_dat = dev_get_platdata(&pdev->dev);