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net:dsa: check for EPROBE_DEFER from dsa_dst_parse() 

Since there can be multiple dsa switches stacked together but
not all of devicetree nodes available at the time of calling
dsa_dst_parse(), EPROBE_DEFER can be returned by it. When this
happens, only the last dsa switch has to be deleted by
dsa_dst_del_ds(), but not the whole list, because next time linux
cames back to this function it will try to add only the last dsa
switch which returned EPROBE_DEFER.

Signed-off-by: Volodymyr Bendiuga <volodymyr.bendiuga@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Volodymyr Bendiuga 2017-01-05 11:10:13 +01:00 committed by David S. Miller
parent 56b46b4378
commit 5e6eb45698
1 changed files with 7 additions and 1 deletions
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8
net/dsa/dsa2.c
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@ -647,8 +647,14 @@ static int _dsa_register_switch(struct dsa_switch *ds, struct device_node *np)
}
err = dsa_dst_parse(dst);
if (err)
if (err) {
if (err == -EPROBE_DEFER) {
dsa_dst_del_ds(dst, ds, ds->index);
return err;
}
goto out_del_dst;
}
err = dsa_dst_apply(dst);
if (err) {