diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/ti/davinci_cpdma.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/net/ethernet/ti/davinci_cpdma.c b/drivers/net/ethernet/ti/davinci_cpdma.c index 4e693c3aab27..0ca2a1a254de 100644 --- a/drivers/net/ethernet/ti/davinci_cpdma.c +++ b/drivers/net/ethernet/ti/davinci_cpdma.c @@ -1423,8 +1423,23 @@ int cpdma_get_num_tx_descs(struct cpdma_ctlr *ctlr) return ctlr->num_tx_desc; } -void cpdma_set_num_rx_descs(struct cpdma_ctlr *ctlr, int num_rx_desc) +int cpdma_set_num_rx_descs(struct cpdma_ctlr *ctlr, int num_rx_desc) { + unsigned long flags; + int temp, ret; + + spin_lock_irqsave(&ctlr->lock, flags); + + temp = ctlr->num_rx_desc; ctlr->num_rx_desc = num_rx_desc; ctlr->num_tx_desc = ctlr->pool->num_desc - ctlr->num_rx_desc; + ret = cpdma_chan_split_pool(ctlr); + if (ret) { + ctlr->num_rx_desc = temp; + ctlr->num_tx_desc = ctlr->pool->num_desc - ctlr->num_rx_desc; + } + + spin_unlock_irqrestore(&ctlr->lock, flags); + + return ret; } |