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net: ethernet: davinci_cpdma: decrease the desc count when cleaning up the remaining packets

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chan->count is used by rx channel. If the desc count is not updated by
the clean up loop in cpdma_chan_stop, the value written to the rxfree
register in cpdma_chan_start will be incorrect.

Signed-off-by: Tao Hou <hotforest@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
htbegin 2012-10-01 16:42:43 +00:00 committed by David S. Miller
parent da1586461e
commit ffb5ba9001
1 changed files with 1 additions and 0 deletions
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drivers/net/ethernet/ti/davinci_cpdma.c
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@ -863,6 +863,7 @@ int cpdma_chan_stop(struct cpdma_chan *chan)
next_dma = desc_read(desc, hw_next);
chan->head = desc_from_phys(pool, next_dma);
chan->count--;
chan->stats.teardown_dequeue++;
/* issue callback without locks held */