net: ethernet: davinci_cpdma: decrease the desc count when cleaning up the remaining...
authorhtbegin <hotforest@gmail.com>
Mon, 1 Oct 2012 16:42:43 +0000 (16:42 +0000)
committerDavid S. Miller <davem@davemloft.net>
Wed, 3 Oct 2012 02:34:21 +0000 (22:34 -0400)
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>
drivers/net/ethernet/ti/davinci_cpdma.c

index d15c888e9df8a15b02d104ace349c1926ad81107..49956730cd8db884ac1696d108cb62fe61d49533 100644 (file)
@@ -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 */