diff options
Diffstat (limited to 'drivers/net/ethernet/smsc/smc91x.c')
| -rw-r--r-- | drivers/net/ethernet/smsc/smc91x.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/ethernet/smsc/smc91x.c b/drivers/net/ethernet/smsc/smc91x.c index 726b80f45906..73212590d04a 100644 --- a/drivers/net/ethernet/smsc/smc91x.c +++ b/drivers/net/ethernet/smsc/smc91x.c @@ -2275,6 +2275,13 @@ static int smc_drv_probe(struct platform_device *pdev) if (pd) { memcpy(&lp->cfg, pd, sizeof(lp->cfg)); lp->io_shift = SMC91X_IO_SHIFT(lp->cfg.flags); + + if (!SMC_8BIT(lp) && !SMC_16BIT(lp)) { + dev_err(&pdev->dev, + "at least one of 8-bit or 16-bit access support is required.\n"); + ret = -ENXIO; + goto out_free_netdev; + } } #if IS_BUILTIN(CONFIG_OF) @@ -2316,6 +2323,9 @@ static int smc_drv_probe(struct platform_device *pdev) } else { lp->cfg.flags |= SMC91X_USE_16BIT; } + if (!device_property_read_u32(&pdev->dev, "reg-shift", + &val)) + lp->io_shift = val; } #endif |