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net: ethernet: ti: davinci_cpdma: don't stop ctlr if it was stopped 

No need to stop ctlr if it was already stopped. It can cause timeout
warns. Steps:
- ifconfig eth0 down
- ethtool -l eth0 rx 8 tx 8
- ethtool -l eth0 rx 1 tx 1

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ivan Khoronzhuk 2016-11-11 16:10:47 +02:00 committed by David S. Miller
parent 991ddb1f6a
commit b993eec0e1
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/ti/davinci_cpdma.c
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@ -387,7 +387,7 @@ int cpdma_ctlr_stop(struct cpdma_ctlr *ctlr)
int i;
spin_lock_irqsave(&ctlr->lock, flags);
if (ctlr->state == CPDMA_STATE_TEARDOWN) {
if (ctlr->state != CPDMA_STATE_ACTIVE) {
spin_unlock_irqrestore(&ctlr->lock, flags);
return -EINVAL;
}