From a3d98b9028395405509bc9e4cbe4b886ebae3c41 Mon Sep 17 00:00:00 2001 From: Lionel Debieve Date: Mon, 29 Jan 2018 15:28:09 +0100 Subject: [PATCH] crypto: stm32/hash - avoid error if maxburst not defined 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 Signed-off-by: Herbert Xu --- 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 89b0c2490d80..37815aa7f5de 100644 --- a/drivers/crypto/stm32/stm32-hash.c +++ b/drivers/crypto/stm32/stm32-hash.c @@ -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) -- 2.11.0