diff options
Diffstat (limited to 'drivers/dma/hsu/hsu.c')
| -rw-r--r-- | drivers/dma/hsu/hsu.c | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/drivers/dma/hsu/hsu.c b/drivers/dma/hsu/hsu.c index 7669c7dd1..823ad728a 100644 --- a/drivers/dma/hsu/hsu.c +++ b/drivers/dma/hsu/hsu.c @@ -146,7 +146,7 @@ irqreturn_t hsu_dma_irq(struct hsu_dma_chip *chip, unsigned short nr) u32 sr; /* Sanity check */ - if (nr >= chip->pdata->nr_channels) + if (nr >= chip->hsu->nr_channels) return IRQ_NONE; hsuc = &chip->hsu->chan[nr]; @@ -375,7 +375,6 @@ static void hsu_dma_free_chan_resources(struct dma_chan *chan) int hsu_dma_probe(struct hsu_dma_chip *chip) { struct hsu_dma *hsu; - struct hsu_dma_platform_data *pdata = chip->pdata; void __iomem *addr = chip->regs + chip->offset; unsigned short i; int ret; @@ -386,25 +385,16 @@ int hsu_dma_probe(struct hsu_dma_chip *chip) chip->hsu = hsu; - if (!pdata) { - pdata = devm_kzalloc(chip->dev, sizeof(*pdata), GFP_KERNEL); - if (!pdata) - return -ENOMEM; + /* Calculate nr_channels from the IO space length */ + hsu->nr_channels = (chip->length - chip->offset) / HSU_DMA_CHAN_LENGTH; - chip->pdata = pdata; - - /* Guess nr_channels from the IO space length */ - pdata->nr_channels = (chip->length - chip->offset) / - HSU_DMA_CHAN_LENGTH; - } - - hsu->chan = devm_kcalloc(chip->dev, pdata->nr_channels, + hsu->chan = devm_kcalloc(chip->dev, hsu->nr_channels, sizeof(*hsu->chan), GFP_KERNEL); if (!hsu->chan) return -ENOMEM; INIT_LIST_HEAD(&hsu->dma.channels); - for (i = 0; i < pdata->nr_channels; i++) { + for (i = 0; i < hsu->nr_channels; i++) { struct hsu_dma_chan *hsuc = &hsu->chan[i]; hsuc->vchan.desc_free = hsu_dma_desc_free; @@ -440,7 +430,7 @@ int hsu_dma_probe(struct hsu_dma_chip *chip) if (ret) return ret; - dev_info(chip->dev, "Found HSU DMA, %d channels\n", pdata->nr_channels); + dev_info(chip->dev, "Found HSU DMA, %d channels\n", hsu->nr_channels); return 0; } EXPORT_SYMBOL_GPL(hsu_dma_probe); @@ -452,7 +442,7 @@ int hsu_dma_remove(struct hsu_dma_chip *chip) dma_async_device_unregister(&hsu->dma); - for (i = 0; i < chip->pdata->nr_channels; i++) { + for (i = 0; i < hsu->nr_channels; i++) { struct hsu_dma_chan *hsuc = &hsu->chan[i]; tasklet_kill(&hsuc->vchan.task); |