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stmmac: ipq806x: Return error values instead of pointers

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Typically we return error pointers when we want to use those
pointers in the non-error case, but this function is just
returning error pointers or NULL for success. Change the style to
plain int to follow normal kernel coding styles.

Cc: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Boyd 2015-12-02 23:55:15 -08:00 committed by David S. Miller
parent dc8d1eb305
commit ead87637a9
1 changed files with 11 additions and 13 deletions
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24
drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
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@ -198,19 +198,19 @@ static int ipq806x_gmac_set_speed(struct ipq806x_gmac *gmac, unsigned int speed)
return 0;
}
static void *ipq806x_gmac_of_parse(struct ipq806x_gmac *gmac)
static int ipq806x_gmac_of_parse(struct ipq806x_gmac *gmac)
{
struct device *dev = &gmac->pdev->dev;
gmac->phy_mode = of_get_phy_mode(dev->of_node);
if (gmac->phy_mode < 0) {
dev_err(dev, "missing phy mode property\n");
return ERR_PTR(-EINVAL);
return -EINVAL;
}
if (of_property_read_u32(dev->of_node, "qcom,id", &gmac->id) < 0) {
dev_err(dev, "missing qcom id property\n");
return ERR_PTR(-EINVAL);
return -EINVAL;
}
/* The GMACs are called 1 to 4 in the documentation, but to simplify the
@ -219,13 +219,13 @@ static void *ipq806x_gmac_of_parse(struct ipq806x_gmac *gmac)
*/
if (gmac->id < 0 || gmac->id > 3) {
dev_err(dev, "invalid gmac id\n");
return ERR_PTR(-EINVAL);
return -EINVAL;
}
gmac->core_clk = devm_clk_get(dev, "stmmaceth");
if (IS_ERR(gmac->core_clk)) {
dev_err(dev, "missing stmmaceth clk property\n");
return gmac->core_clk;
return PTR_ERR(gmac->core_clk);
}
clk_set_rate(gmac->core_clk, 266000000);
@ -234,18 +234,16 @@ static void *ipq806x_gmac_of_parse(struct ipq806x_gmac *gmac)
"qcom,nss-common");
if (IS_ERR(gmac->nss_common)) {
dev_err(dev, "missing nss-common node\n");
return gmac->nss_common;
return PTR_ERR(gmac->nss_common);
}
/* Setup the register map for the qsgmii csr registers */
gmac->qsgmii_csr = syscon_regmap_lookup_by_phandle(dev->of_node,
"qcom,qsgmii-csr");
if (IS_ERR(gmac->qsgmii_csr)) {
if (IS_ERR(gmac->qsgmii_csr))
dev_err(dev, "missing qsgmii-csr node\n");
return gmac->qsgmii_csr;
}
return NULL;
return PTR_ERR_OR_ZERO(gmac->qsgmii_csr);
}
static void ipq806x_gmac_fix_mac_speed(void *priv, unsigned int speed)
@ -262,7 +260,7 @@ static int ipq806x_gmac_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct ipq806x_gmac *gmac;
int val;
void *err;
int err;
val = stmmac_get_platform_resources(pdev, &stmmac_res);
if (val)
@ -279,9 +277,9 @@ static int ipq806x_gmac_probe(struct platform_device *pdev)
gmac->pdev = pdev;
err = ipq806x_gmac_of_parse(gmac);
if (IS_ERR(err)) {
if (err) {
dev_err(dev, "device tree parsing error\n");
return PTR_ERR(err);
return err;
}
regmap_write(gmac->qsgmii_csr, QSGMII_PCS_CAL_LCKDT_CTL,