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crypto: stm32 - use of_device_get_match_data

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The usage of of_device_get_match_data reduce the code size a bit.
Furthermore, it prevents an improbable dereference when
of_match_device() return NULL.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Corentin LABBE 2017-09-20 20:31:40 +02:00 committed by Herbert Xu
parent e781c17c22
commit de91568838
1 changed files with 2 additions and 5 deletions
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7
drivers/crypto/stm32/stm32-hash.c
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@ -1407,11 +1407,10 @@ MODULE_DEVICE_TABLE(of, stm32_hash_of_match);
static int stm32_hash_get_of_match(struct stm32_hash_dev *hdev,
struct device *dev)
{
const struct of_device_id *match;
int err;
match = of_match_device(stm32_hash_of_match, dev);
if (!match) {
hdev->pdata = of_device_get_match_data(dev);
if (!hdev->pdata) {
dev_err(dev, "no compatible OF match\n");
return -EINVAL;
}
@ -1419,8 +1418,6 @@ static int stm32_hash_get_of_match(struct stm32_hash_dev *hdev,
err = of_property_read_u32(dev->of_node, "dma-maxburst",
&hdev->dma_maxburst);
hdev->pdata = match->data;
return err;
}