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net: of_get_phy_mode: Change API to solve int/unit warnings

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Before this change of_get_phy_mode() returned an enum,
phy_interface_t. On error, -ENODEV etc, is returned. If the result of
the function is stored in a variable of type phy_interface_t, and the
compiler has decided to represent this as an unsigned int, comparision
with -ENODEV etc, is a signed vs unsigned comparision.

Fix this problem by changing the API. Make the function return an
error, or 0 on success, and pass a pointer, of type phy_interface_t,
where the phy mode should be stored.

v2:
Return with *interface set to PHY_INTERFACE_MODE_NA on error.
Add error checks to all users of of_get_phy_mode()
Fixup a few reverse christmas tree errors
Fixup a few slightly malformed reverse christmas trees

v3:
Fix 0-day reported errors.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn
2019-11-04 02:40:33 +01:00
committed by David S. Miller
parent 5d1fcaf35d
commit 0c65b2b90d
53 changed files with 201 additions and 149 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethernet/renesas/ravb_main.c
View File

@@ -2046,7 +2046,9 @@ static int ravb_probe(struct platform_device *pdev)
spin_lock_init(&priv->lock);
INIT_WORK(&priv->work, ravb_tx_timeout_work);
priv->phy_interface = of_get_phy_mode(np);
error = of_get_phy_mode(np, &priv->phy_interface);
if (error && error != -ENODEV)
goto out_release;
priv->no_avb_link = of_property_read_bool(np, "renesas,no-ether-link");
priv->avb_link_active_low =

7
drivers/net/ethernet/renesas/sh_eth.c
View File

@@ -3183,6 +3183,7 @@ static struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev)
{
struct device_node *np = dev->of_node;
struct sh_eth_plat_data *pdata;
phy_interface_t interface;
const char *mac_addr;
int ret;
@@ -3190,10 +3191,10 @@ static struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev)
if (!pdata)
return NULL;
ret = of_get_phy_mode(np);
if (ret < 0)
ret = of_get_phy_mode(np, &interface);
if (ret)
return NULL;
pdata->phy_interface = ret;
pdata->phy_interface = interface;
mac_addr = of_get_mac_address(np);
if (!IS_ERR(mac_addr))