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authorhtbegin <hotforest@gmail.com>2012-10-01 16:42:43 +0000
committerDavid S. Miller <davem@davemloft.net>2012-10-02 22:34:21 -0400
commitffb5ba90017505a19e238e986e6d33f09e4df765 (patch)
treee73f8aae99d744457684be88e507704342a2424b /drivers/net/ethernet/ti/davinci_cpdma.c
parentda1586461e53a4dd045738cce309ab488970f0ef (diff)
downloadlinux-linaro-stable-ffb5ba90017505a19e238e986e6d33f09e4df765.tar.gz
net: ethernet: davinci_cpdma: decrease the desc count when cleaning up the remaining packets
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>
Diffstat (limited to 'drivers/net/ethernet/ti/davinci_cpdma.c')
-rw-r--r--drivers/net/ethernet/ti/davinci_cpdma.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ti/davinci_cpdma.c b/drivers/net/ethernet/ti/davinci_cpdma.c
index d15c888e9df8..49956730cd8d 100644
--- a/drivers/net/ethernet/ti/davinci_cpdma.c
+++ b/drivers/net/ethernet/ti/davinci_cpdma.c
@@ -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 */