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net: dsa: Allow the DSA driver to indicate the tag protocol

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DSA drivers may drive different families of switches which need
different tag protocol. Rather than hard code the tag protocol in the
driver structure, have a callback for the DSA core to call.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn 2016-08-22 16:01:01 +02:00 • committed by David S. Miller
parent 1ae292a245
commit 7b314362a2
7 changed files with 34 additions and 8 deletions
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5
net/dsa/dsa.c
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@ -354,7 +354,10 @@ static int dsa_switch_setup_one(struct dsa_switch *ds, struct device *parent)
* switch.
*/
if (dst->cpu_switch == index) {
dst->tag_ops = dsa_resolve_tag_protocol(drv->tag_protocol);
enum dsa_tag_protocol tag_protocol;
tag_protocol = drv->get_tag_protocol(ds);
dst->tag_ops = dsa_resolve_tag_protocol(tag_protocol);
if (IS_ERR(dst->tag_ops)) {
ret = PTR_ERR(dst->tag_ops);
goto out;