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dmaengine: hisilicon: Use struct_size() in devm_kzalloc()

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Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.

This code was detected with the help of Coccinelle and, audited and
fixed manually.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Zhou Wang <wangzhou1@hisilicon.com>
Link: https://lore.kernel.org/r/20200617211135.GA8660@embeddedor
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Gustavo A. R. Silva 2020-06-17 16:11:35 -05:00 committed by Vinod Koul
parent 09c16edc5a
commit 999a32efed
1 changed files with 1 additions and 4 deletions
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5
drivers/dma/hisi_dma.c
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@ -511,7 +511,6 @@ static int hisi_dma_probe(struct pci_dev *pdev, const struct pci_device_id *id)
struct device *dev = &pdev->dev;
struct hisi_dma_dev *hdma_dev;
struct dma_device *dma_dev;
size_t dev_size;
int ret;
ret = pcim_enable_device(pdev);
@ -534,9 +533,7 @@ static int hisi_dma_probe(struct pci_dev *pdev, const struct pci_device_id *id)
if (ret)
return ret;
dev_size = sizeof(struct hisi_dma_chan) * HISI_DMA_CHAN_NUM +
sizeof(*hdma_dev);
hdma_dev = devm_kzalloc(dev, dev_size, GFP_KERNEL);
hdma_dev = devm_kzalloc(dev, struct_size(hdma_dev, chan, HISI_DMA_CHAN_NUM), GFP_KERNEL);
if (!hdma_dev)
return -EINVAL;