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Subject[PATCH 1/3] crypto: stm32/hash: avoid error if maxburst not defined
Date
From: Lionel Debieve <lionel.debieve@st.com>

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>
---
drivers/crypto/stm32/stm32-hash.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/crypto/stm32/stm32-hash.c b/drivers/crypto/stm32/stm32-hash.c
index 4ca4a264a833..73cdc3b4dca8 100644
--- a/drivers/crypto/stm32/stm32-hash.c
+++ b/drivers/crypto/stm32/stm32-hash.c
@@ -1404,18 +1404,19 @@ 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)
--
2.15.1
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