diff options
| author |   Josua Mayer <josua@solid-run.com> | 2019-07-09 15:01:01 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-07-09 13:03:04 -0700 |
| commit | 433a06d7d74e677c40b1148c70c48677ff62fb6b (patch) | |
| tree | bae7cc573147d5e6a2e869eaeeb341c94f932260 /drivers/net/ethernet/marvell/mvmdio.c | |
| parent | net: mvmdio: print warning when orion-mdio has too many clocks (diff) | |
| download | linux-dev-433a06d7d74e677c40b1148c70c48677ff62fb6b.tar.xz linux-dev-433a06d7d74e677c40b1148c70c48677ff62fb6b.zip | |
net: mvmdio: defer probe of orion-mdio if a clock is not ready
Defer probing of the orion-mdio interface when getting a clock returns
EPROBE_DEFER. This avoids locking up the Armada 8k SoC when mdio is used
before all clocks have been enabled.
Signed-off-by: Josua Mayer <josua@solid-run.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/marvell/mvmdio.c')
| -rw-r--r-- | drivers/net/ethernet/marvell/mvmdio.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/mvmdio.c b/drivers/net/ethernet/marvell/mvmdio.c index eba18065a4da..f660cc2b8258 100644 --- a/drivers/net/ethernet/marvell/mvmdio.c +++ b/drivers/net/ethernet/marvell/mvmdio.c @@ -321,6 +321,10 @@ static int orion_mdio_probe(struct platform_device *pdev) for (i = 0; i < ARRAY_SIZE(dev->clk); i++) { dev->clk[i] = of_clk_get(pdev->dev.of_node, i); + if (PTR_ERR(dev->clk[i]) == -EPROBE_DEFER) { + ret = -EPROBE_DEFER; + goto out_clk; + } if (IS_ERR(dev->clk[i])) break; clk_prepare_enable(dev->clk[i]); @@ -366,6 +370,7 @@ out_mdio: if (dev->err_interrupt > 0) writel(0, dev->regs + MVMDIO_ERR_INT_MASK); +out_clk: for (i = 0; i < ARRAY_SIZE(dev->clk); i++) { if (IS_ERR(dev->clk[i])) break; |