[PATCH net-next 05/15] sfc_ef100: PHY probe stub

[Edward Cree]

We can't actually do the MCDI to probe it fully until we have working
 MCDI, which comes later, but we need efx->phy_data to be allocated so
 that when we get MCDI events the link-state change handler doesn't
 NULL-dereference.

Signed-off-by: Edward Cree <ec...@solarflare.com>
---
 drivers/net/ethernet/sfc/ef100_nic.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/net/ethernet/sfc/ef100_nic.c 
b/drivers/net/ethernet/sfc/ef100_nic.c
index 772cde009472..27e00b003039 100644
--- a/drivers/net/ethernet/sfc/ef100_nic.c
+++ b/drivers/net/ethernet/sfc/ef100_nic.c
@@ -80,6 +80,16 @@ static irqreturn_t ef100_msi_interrupt(int irq, void *dev_id)
        return IRQ_HANDLED;
 }
 
+static int ef100_phy_probe(struct efx_nic *efx)
+{
+       /* stub: allocate the phy_data */
+       efx->phy_data = kzalloc(sizeof(struct efx_mcdi_phy_data), GFP_KERNEL);
+       if (!efx->phy_data)
+               return -ENOMEM;
+
+       return 0;
+}
+
 /*     Other
  */
 
@@ -196,6 +206,10 @@ static int ef100_probe_main(struct efx_nic *efx)
 
        efx->max_vis = EF100_MAX_VIS;
 
+       rc = ef100_phy_probe(efx);
+       if (rc)
+               goto fail;
+
        rc = efx_init_channels(efx);
        if (rc)
                goto fail;