diff options
Diffstat (limited to 'drivers/dma/stm32-mdma.c')
| -rw-r--r-- | drivers/dma/stm32-mdma.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c index bae08b3f55c7..6505081ced44 100644 --- a/drivers/dma/stm32-mdma.c +++ b/drivers/dma/stm32-mdma.c @@ -224,7 +224,7 @@ struct stm32_mdma_desc { u32 ccr; bool cyclic; u32 count; - struct stm32_mdma_desc_node node[]; + struct stm32_mdma_desc_node node[] __counted_by(count); }; struct stm32_mdma_dma_config { @@ -256,7 +256,7 @@ struct stm32_mdma_device { u32 nr_ahb_addr_masks; u32 chan_reserved; struct stm32_mdma_chan chan[STM32_MDMA_MAX_CHANNELS]; - u32 ahb_addr_masks[]; + u32 ahb_addr_masks[] __counted_by(nr_ahb_addr_masks); }; static struct stm32_mdma_device *stm32_mdma_get_dev( @@ -321,6 +321,7 @@ static struct stm32_mdma_desc *stm32_mdma_alloc_desc( desc = kzalloc(struct_size(desc, node, count), GFP_NOWAIT); if (!desc) return NULL; + desc->count = count; for (i = 0; i < count; i++) { desc->node[i].hwdesc = @@ -330,8 +331,6 @@ static struct stm32_mdma_desc *stm32_mdma_alloc_desc( goto err; } - desc->count = count; - return desc; err: @@ -489,7 +488,7 @@ static int stm32_mdma_set_xfer_param(struct stm32_mdma_chan *chan, src_maxburst = chan->dma_config.src_maxburst; dst_maxburst = chan->dma_config.dst_maxburst; - ccr = stm32_mdma_read(dmadev, STM32_MDMA_CCR(chan->id)); + ccr = stm32_mdma_read(dmadev, STM32_MDMA_CCR(chan->id)) & ~STM32_MDMA_CCR_EN; ctcr = stm32_mdma_read(dmadev, STM32_MDMA_CTCR(chan->id)); ctbr = stm32_mdma_read(dmadev, STM32_MDMA_CTBR(chan->id)); @@ -965,7 +964,7 @@ stm32_mdma_prep_dma_memcpy(struct dma_chan *c, dma_addr_t dest, dma_addr_t src, if (!desc) return NULL; - ccr = stm32_mdma_read(dmadev, STM32_MDMA_CCR(chan->id)); + ccr = stm32_mdma_read(dmadev, STM32_MDMA_CCR(chan->id)) & ~STM32_MDMA_CCR_EN; ctcr = stm32_mdma_read(dmadev, STM32_MDMA_CTCR(chan->id)); ctbr = stm32_mdma_read(dmadev, STM32_MDMA_CTBR(chan->id)); cbndtr = stm32_mdma_read(dmadev, STM32_MDMA_CBNDTR(chan->id)); @@ -1627,13 +1626,13 @@ static int stm32_mdma_probe(struct platform_device *pdev) GFP_KERNEL); if (!dmadev) return -ENOMEM; + dmadev->nr_ahb_addr_masks = count; dmadev->nr_channels = nr_channels; dmadev->nr_requests = nr_requests; device_property_read_u32_array(&pdev->dev, "st,ahb-addr-masks", dmadev->ahb_addr_masks, count); - dmadev->nr_ahb_addr_masks = count; dmadev->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(dmadev->base)) |