net: arc_emac: reset txbd_curr and txbd_dirty pointers to zero

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EMAC reset internal tx ring pointer to zero at statup.
txbd_curr and txbd_dirty can be different from zero.
That cause ethernet transfer hang (no packets transmitted).

In order to reproduce, run on device:
    ifconfig eth0 down
    ifconfig eth0 up

Signed-off-by: Alexander Kochetkov <al.kochet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Alexander Kochetkov 2016-02-09 18:20:39 +03:00 • committed by David S. Miller

parent c278c253f3

commit 99f93a156a

1 changed files with 3 additions and 0 deletions

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3

drivers/net/ethernet/arc/emac_main.c

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