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net: fec: defer probe if regulator is not ready 

Defer probe if regulator is not ready. E.g. some regulator is fixed
regulator controlled by i2c expander gpio, the i2c device may be probed
after the driver, then it should handle the case of defer probe error.

Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Fugang Duan 2018-01-03 10:39:30 +08:00 committed by David S. Miller
parent e90f686b43
commit 3f38c68303
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/freescale/fec_main.c
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@ -3469,6 +3469,10 @@ fec_probe(struct platform_device *pdev)
goto failed_regulator;
}
} else {
if (PTR_ERR(fep->reg_phy) == -EPROBE_DEFER) {
ret = -EPROBE_DEFER;
goto failed_regulator;
}
fep->reg_phy = NULL;
}