Doug Berger 876dbadd53
net: bcmgenet: Fix unmapping of fragments in bcmgenet_xmit() ...
In case we fail to map a single fragment, we would be leaving the
transmit ring populated with stale entries.
This commit introduces the helper function bcmgenet_put_txcb()
which takes care of rewinding the per-ring write pointer back to
where we left.
It also consolidates the functionality of bcmgenet_xmit_single()
and bcmgenet_xmit_frag() into the bcmgenet_xmit() function to
make the unmapping of control blocks cleaner.
Fixes: 1c1008c793f.fainelli@gmail.com >
Signed-off-by: Doug Berger <opendmb@gmail.com >
Signed-off-by: David S. Miller <davem@davemloft.net >
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