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net: dsa: cleanup resources upon module removal 

Make sure that we unassign the master_netdev dsa_ptr to make the packet
processing go through the regular Ethernet receive path.

Suggested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Neil Armstrong 2015-12-07 13:57:33 +01:00 committed by David S. Miller
parent 4baee937b8
commit b0dc635d92
1 changed files with 8 additions and 0 deletions
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8
net/dsa/dsa.c
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@ -985,6 +985,14 @@ static int dsa_suspend(struct device *d)
struct dsa_switch_tree *dst = platform_get_drvdata(pdev);
int i, ret = 0;
dst->master_netdev->dsa_ptr = NULL;
/* If we used a tagging format that doesn't have an ethertype
* field, make sure that all packets from this point get sent
* without the tag and go through the regular receive path.
*/
wmb();
for (i = 0; i < dst->pd->nr_chips; i++) {
struct dsa_switch *ds = dst->ds[i];