diff options
Diffstat (limited to 'drivers/dma/amba-pl08x.c')
| -rw-r--r-- | drivers/dma/amba-pl08x.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index 986c127..660165d 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -1540,32 +1540,29 @@ static void pl08x_tasklet(unsigned long data) { struct pl08x_dma_chan *plchan = (struct pl08x_dma_chan *) data; struct pl08x_driver_data *pl08x = plchan->host; + struct pl08x_txd *txd; + dma_async_tx_callback callback = NULL; + void *callback_param = NULL; unsigned long flags; spin_lock_irqsave(&plchan->lock, flags); - if (plchan->at) { - dma_async_tx_callback callback = - plchan->at->tx.callback; - void *callback_param = - plchan->at->tx.callback_param; + txd = plchan->at; + plchan->at = NULL; - /* - * Update last completed - */ - plchan->lc = plchan->at->tx.cookie; + if (txd) { + callback = txd->tx.callback; + callback_param = txd->tx.callback_param; /* - * Callback to signal completion + * Update last completed */ - if (callback) - callback(callback_param); + plchan->lc = txd->tx.cookie; /* * Free the descriptor */ - pl08x_free_txd(pl08x, plchan->at); - plchan->at = NULL; + pl08x_free_txd(pl08x, txd); } /* * If a new descriptor is queued, set it up @@ -1616,6 +1613,10 @@ static void pl08x_tasklet(unsigned long data) } spin_unlock_irqrestore(&plchan->lock, flags); + + /* Callback to signal completion */ + if (callback) + callback(callback_param); } static irqreturn_t pl08x_irq(int irq, void *dev) |