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| author | Ioana Ciornei <ioana.ciornei@nxp.com> | 2018-11-09 15:26:45 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-11-09 20:08:58 -0800 |
| commit | d7f5a9d89a55af68908a013811404971f88d661e (patch) | |
| tree | 33f41474981f678f9526bfeafea0dd36371dceb4 /drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | |
| parent | 029a374348807222a872ba4baaf6e3e96846aa16 (diff) | |
| download | linux-stable-d7f5a9d89a55af68908a013811404971f88d661e.tar.gz linux-stable-d7f5a9d89a55af68908a013811404971f88d661e.tar.bz2 linux-stable-d7f5a9d89a55af68908a013811404971f88d661e.zip | |
dpaa2-eth: defer probe on object allocate
The fsl_mc_object_allocate function can fail because not all allocatable
objects are probed by the fsl_mc_allocator at the call time. Defer the
dpaa2-eth probe when this happens.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c')
| -rw-r--r-- | drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c index 88f7acce38dc..bdfb13b71998 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c @@ -1434,8 +1434,11 @@ static struct fsl_mc_device *setup_dpcon(struct dpaa2_eth_priv *priv) err = fsl_mc_object_allocate(to_fsl_mc_device(dev), FSL_MC_POOL_DPCON, &dpcon); if (err) { - dev_info(dev, "Not enough DPCONs, will go on as-is\n"); - return NULL; + if (err == -ENXIO) + err = -EPROBE_DEFER; + else + dev_info(dev, "Not enough DPCONs, will go on as-is\n"); + return ERR_PTR(err); } err = dpcon_open(priv->mc_io, 0, dpcon->obj_desc.id, &dpcon->mc_handle); @@ -1493,8 +1496,10 @@ alloc_channel(struct dpaa2_eth_priv *priv) return NULL; channel->dpcon = setup_dpcon(priv); - if (!channel->dpcon) + if (IS_ERR_OR_NULL(channel->dpcon)) { + err = PTR_ERR(channel->dpcon); goto err_setup; + } err = dpcon_get_attributes(priv->mc_io, 0, channel->dpcon->mc_handle, &attr); @@ -1513,7 +1518,7 @@ err_get_attr: free_dpcon(priv, channel->dpcon); err_setup: kfree(channel); - return NULL; + return ERR_PTR(err); } static void free_channel(struct dpaa2_eth_priv *priv, @@ -1547,10 +1552,11 @@ static int setup_dpio(struct dpaa2_eth_priv *priv) for_each_online_cpu(i) { /* Try to allocate a channel */ channel = alloc_channel(priv); - if (!channel) { - dev_info(dev, - "No affine channel for cpu %d and above\n", i); - err = -ENODEV; + if (IS_ERR_OR_NULL(channel)) { + err = PTR_ERR(channel); + if (err != -EPROBE_DEFER) + dev_info(dev, + "No affine channel for cpu %d and above\n", i); goto err_alloc_ch; } @@ -1608,9 +1614,12 @@ err_set_cdan: err_service_reg: free_channel(priv, channel); err_alloc_ch: + if (err == -EPROBE_DEFER) + return err; + if (cpumask_empty(&priv->dpio_cpumask)) { dev_err(dev, "No cpu with an affine DPIO/DPCON\n"); - return err; + return -ENODEV; } dev_info(dev, "Cores %*pbl available for processing ingress traffic\n", @@ -1732,7 +1741,10 @@ static int setup_dpbp(struct dpaa2_eth_priv *priv) err = fsl_mc_object_allocate(to_fsl_mc_device(dev), FSL_MC_POOL_DPBP, &dpbp_dev); if (err) { - dev_err(dev, "DPBP device allocation failed\n"); + if (err == -ENXIO) + err = -EPROBE_DEFER; + else + dev_err(dev, "DPBP device allocation failed\n"); return err; } |