提交 b4ab9d76 编写于 作者: D David S. Miller

Merge branch 'thunderx-mdio-fixes'

David Daney says:

====================
net/phy: Fixes for Cavium Thunder MDIO code.

Previous patch set:
commit 5fc7cf17 ("net: thunderx: Cleanup PHY probing code.")
commit 1eefee90 ("phy: mdio-octeon: Refactor into two files/modules")
commit 379d7ac7 ("phy: mdio-thunder: Add driver for Cavium Thunder SoC MDIO buses.")

Had several problems.  We try to fix them here.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
......@@ -35,7 +35,7 @@ config THUNDER_NIC_BGX
tristate "Thunder MAC interface driver (BGX)"
depends on 64BIT
select PHYLIB
select MDIO_OCTEON
select MDIO_THUNDER
---help---
This driver supports programming and controlling of MAC
interface from NIC physical function driver.
......
......@@ -974,17 +974,18 @@ static int bgx_init_acpi_phy(struct bgx *bgx)
static int bgx_init_of_phy(struct bgx *bgx)
{
struct fwnode_handle *fwn;
struct device_node *node = NULL;
u8 lmac = 0;
const char *mac;
device_for_each_child_node(&bgx->pdev->dev, fwn) {
struct phy_device *pd;
struct device_node *phy_np;
struct device_node *node = to_of_node(fwn);
const char *mac;
/* Should always be an OF node. But if it is not, we
* cannot handle it, so exit the loop.
*/
node = to_of_node(fwn);
if (!node)
break;
......@@ -1005,17 +1006,30 @@ static int bgx_init_of_phy(struct bgx *bgx)
/* Wait until the phy drivers are available */
pd = of_phy_find_device(phy_np);
if (!pd)
return -EPROBE_DEFER;
goto defer;
bgx->lmac[lmac].phydev = pd;
}
lmac++;
if (lmac == MAX_LMAC_PER_BGX) {
of_node_put(node);
if (lmac == MAX_LMAC_PER_BGX)
break;
}
}
of_node_put(node);
return 0;
defer:
/* We are bailing out, try not to leak device reference counts
* for phy devices we may have already found.
*/
while (lmac) {
if (bgx->lmac[lmac].phydev) {
put_device(&bgx->lmac[lmac].phydev->mdio.dev);
bgx->lmac[lmac].phydev = NULL;
}
lmac--;
}
of_node_put(node);
return -EPROBE_DEFER;
}
#else
......
......@@ -147,3 +147,7 @@ int cavium_mdiobus_write(struct mii_bus *bus, int phy_id, int regnum, u16 val)
return 0;
}
EXPORT_SYMBOL(cavium_mdiobus_write);
MODULE_DESCRIPTION("Common code for OCTEON and Thunder MDIO bus drivers");
MODULE_AUTHOR("David Daney");
MODULE_LICENSE("GPL");
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