diff options
Diffstat (limited to 'drivers/rapidio')
| -rw-r--r-- | drivers/rapidio/devices/tsi721_dma.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/rapidio/devices/tsi721_dma.c b/drivers/rapidio/devices/tsi721_dma.c index 14fc36ac3d85..006ea5a45020 100644 --- a/drivers/rapidio/devices/tsi721_dma.c +++ b/drivers/rapidio/devices/tsi721_dma.c @@ -222,7 +222,7 @@ static int tsi721_bdma_ch_free(struct tsi721_bdma_chan *bdma_chan) struct tsi721_device *priv = to_tsi721(bdma_chan->dchan.device); #endif - if (bdma_chan->bd_base == NULL) + if (!bdma_chan->bd_base) return 0; /* Check if DMA channel still running */ @@ -346,7 +346,7 @@ tsi721_desc_fill_init(struct tsi721_tx_desc *desc, { u64 rio_addr; - if (bd_ptr == NULL) + if (!bd_ptr) return -EINVAL; /* Initialize DMA descriptor */ @@ -370,7 +370,7 @@ tsi721_desc_fill_init(struct tsi721_tx_desc *desc, static int tsi721_desc_fill_end(struct tsi721_dma_desc *bd_ptr, u32 bcount, bool interrupt) { - if (bd_ptr == NULL) + if (!bd_ptr) return -EINVAL; /* Update DMA descriptor */ @@ -555,9 +555,7 @@ static void tsi721_advance_work(struct tsi721_bdma_chan *bdma_chan, * If there is no data transfer in progress, fetch new descriptor from * the pending queue. */ - - if (desc == NULL && bdma_chan->active_tx == NULL && - !list_empty(&bdma_chan->queue)) { + if (!desc && !bdma_chan->active_tx && !list_empty(&bdma_chan->queue)) { desc = list_first_entry(&bdma_chan->queue, struct tsi721_tx_desc, desc_node); list_del_init((&desc->desc_node)); @@ -796,7 +794,7 @@ static void tsi721_free_chan_resources(struct dma_chan *dchan) tsi_debug(DMA, &dchan->dev->device, "DMAC%d", bdma_chan->id); - if (bdma_chan->bd_base == NULL) + if (!bdma_chan->bd_base) return; tsi721_bdma_interrupt_enable(bdma_chan, 0); |