From: "Gustavo A. R. Silva" <gustavoars@kernel.org>
To: Zhou Wang <wangzhou1@hisilicon.com>,
Dan Williams <dan.j.williams@intel.com>,
Vinod Koul <vkoul@kernel.org>
Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org,
"Gustavo A. R. Silva" <gustavo@embeddedor.com>
Subject: [PATCH][next] dmaengine: hisilicon: Use struct_size() in devm_kzalloc()
Date: Wed, 17 Jun 2020 16:11:35 -0500 [thread overview]
Message-ID: <20200617211135.GA8660@embeddedor> (raw)
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>
---
drivers/dma/hisi_dma.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/dma/hisi_dma.c b/drivers/dma/hisi_dma.c
index ed3619266a48..e1a958ae7925 100644
--- a/drivers/dma/hisi_dma.c
+++ b/drivers/dma/hisi_dma.c
@@ -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;
--
2.27.0
next reply other threads:[~2020-06-17 21:06 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-17 21:11 Gustavo A. R. Silva [this message]
2020-06-22 5:24 ` [PATCH][next] dmaengine: hisilicon: Use struct_size() in devm_kzalloc() Zhou Wang
2020-06-24 5:56 ` Vinod Koul
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