diff options
| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-09-24 20:36:18 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-09-24 23:04:53 -0700 |
| commit | 04d53b20fe44afe635b3d4438b437f7a12927e9a (patch) | |
| tree | 9edf8840e71724ca7e5a9c83208b2c4e1844a99d /drivers/net/ethernet/freescale | |
| parent | f018ae7a8c576345d56a0cd40d86c0574a2eb360 (diff) | |
| download | op-kernel-dev-04d53b20fe44afe635b3d4438b437f7a12927e9a.zip op-kernel-dev-04d53b20fe44afe635b3d4438b437f7a12927e9a.tar.gz | |
net: fix phy refcounting in a bunch of drivers
of_phy_find_device() increments the phy struct device refcount, which
we need to properly balance. Add code to network drivers using this
function to ensure that the struct device refcount is correctly
balanced.
For xgene, looking back in the history, we should be able to use
of_phy_connect() with a zero flags argument for the DT case as this is
how the driver used to operate prior to de7b5b3d790a ("net: eth: xgene:
change APM X-Gene SoC platform ethernet to support ACPI").
This leaves the Cavium Thunder BGX unfixed; fixing this driver is a
complicated task, one which the maintainers need to be involved with.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale')
| -rw-r--r-- | drivers/net/ethernet/freescale/gianfar.c | 3 | ||||
| -rw-r--r-- | drivers/net/ethernet/freescale/ucc_geth.c | 8 |
2 files changed, 10 insertions, 1 deletions
diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index 803ed4c9..a5cf433 100644 --- a/drivers/net/ethernet/freescale/gianfar.c +++ b/drivers/net/ethernet/freescale/gianfar.c @@ -1702,6 +1702,7 @@ static void gfar_configure_serdes(struct net_device *dev) tbiphy = of_phy_find_device(priv->tbi_node); if (!tbiphy) { dev_err(&dev->dev, "error: Could not get TBI device\n"); + put_device(&tbiphy->dev); return; } @@ -1723,6 +1724,8 @@ static void gfar_configure_serdes(struct net_device *dev) phy_write(tbiphy, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART | BMCR_FULLDPLX | BMCR_SPEED1000); + + put_device(&tbiphy->dev); } static int __gfar_is_rx_idle(struct gfar_private *priv) diff --git a/drivers/net/ethernet/freescale/ucc_geth.c b/drivers/net/ethernet/freescale/ucc_geth.c index 4dd40e0..650f788 100644 --- a/drivers/net/ethernet/freescale/ucc_geth.c +++ b/drivers/net/ethernet/freescale/ucc_geth.c @@ -1384,6 +1384,8 @@ static int adjust_enet_interface(struct ucc_geth_private *ugeth) value = phy_read(tbiphy, ENET_TBI_MII_CR); value &= ~0x1000; /* Turn off autonegotiation */ phy_write(tbiphy, ENET_TBI_MII_CR, value); + + put_device(&tbiphy->dev); } init_check_frame_length_mode(ug_info->lengthCheckRx, &ug_regs->maccfg2); @@ -1702,8 +1704,10 @@ static void uec_configure_serdes(struct net_device *dev) * everything for us? Resetting it takes the link down and requires * several seconds for it to come back. */ - if (phy_read(tbiphy, ENET_TBI_MII_SR) & TBISR_LSTATUS) + if (phy_read(tbiphy, ENET_TBI_MII_SR) & TBISR_LSTATUS) { + put_device(&tbiphy->dev); return; + } /* Single clk mode, mii mode off(for serdes communication) */ phy_write(tbiphy, ENET_TBI_MII_ANA, TBIANA_SETTINGS); @@ -1711,6 +1715,8 @@ static void uec_configure_serdes(struct net_device *dev) phy_write(tbiphy, ENET_TBI_MII_TBICON, TBICON_CLK_SELECT); phy_write(tbiphy, ENET_TBI_MII_CR, TBICR_SETTINGS); + + put_device(&tbiphy->dev); } /* Configure the PHY for dev. |
