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sfc: don't BUG_ON efx->max_channels == 0 in probe

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efx_ef10_probe() was BUGging out if the BAR2 size was 0.  This is
 unnecessarily violent; instead we should just fail to probe the device.
Kept a WARN_ON as this problem indicates a broken or misconfigured NIC.

Signed-off-by: Edward Cree <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Edward Cree 2014-11-03 14:14:35 +00:00 • committed by David S. Miller
commit 9fd3d3a430
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/sfc/ef10.c
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@ -180,7 +180,8 @@ static int efx_ef10_probe(struct efx_nic *efx)
EFX_MAX_CHANNELS,
resource_size(&efx->pci_dev->resource[EFX_MEM_BAR]) /
(EFX_VI_PAGE_SIZE * EFX_TXQ_TYPES));
BUG_ON(efx->max_channels == 0);
if (WARN_ON(efx->max_channels == 0))
return -EIO;
nic_data = kzalloc(sizeof(*nic_data), GFP_KERNEL);
if (!nic_data)