From 5e6eb456983c994a8e582127a300b6552e5a1768 Mon Sep 17 00:00:00 2001 From: Volodymyr Bendiuga Date: Thu, 5 Jan 2017 11:10:13 +0100 Subject: [PATCH] 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 Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller --- net/dsa/dsa2.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c index 5fff951..bad119c 100644 --- a/net/dsa/dsa2.c +++ b/net/dsa/dsa2.c @@ -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) { -- 2.7.4