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crypto: stm32/hash - avoid error if maxburst not defined

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dma-maxburst is an optional value and must not return
error in case of dma not used (or max-burst not defined).

Signed-off-by: Lionel Debieve <lionel.debieve@st.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Lionel Debieve 2018-01-29 15:28:09 +01:00 committed by Herbert Xu
parent d3e41b50b4
commit a3d98b9028
1 changed files with 6 additions and 5 deletions
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11
drivers/crypto/stm32/stm32-hash.c
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@ -1413,18 +1413,19 @@ MODULE_DEVICE_TABLE(of, stm32_hash_of_match);
static int stm32_hash_get_of_match(struct stm32_hash_dev *hdev,
struct device *dev)
{
int err;
hdev->pdata = of_device_get_match_data(dev);
if (!hdev->pdata) {
dev_err(dev, "no compatible OF match\n");
return -EINVAL;
}
err = of_property_read_u32(dev->of_node, "dma-maxburst",
&hdev->dma_maxburst);
if (of_property_read_u32(dev->of_node, "dma-maxburst",
&hdev->dma_maxburst)) {
dev_info(dev, "dma-maxburst not specified, using 0\n");
hdev->dma_maxburst = 0;
}
return err;
return 0;
}
static int stm32_hash_probe(struct platform_device *pdev)