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crypto: aspeed - add error handling if dmam_alloc_coherent() failed
Since the acry_dev->buf_addr may be NULL, add error handling to prevent any additional access to avoid potential issues. Signed-off-by: Neal Liu <neal_liu@aspeedtech.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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1 changed files with 4 additions and 1 deletions
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@ -779,7 +779,10 @@ static int aspeed_acry_probe(struct platform_device *pdev)
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acry_dev->buf_addr = dmam_alloc_coherent(dev, ASPEED_ACRY_BUFF_SIZE,
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&acry_dev->buf_dma_addr,
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GFP_KERNEL);
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memzero_explicit(acry_dev->buf_addr, ASPEED_ACRY_BUFF_SIZE);
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if (!acry_dev->buf_addr) {
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rc = -ENOMEM;
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goto err_engine_rsa_start;
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}
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aspeed_acry_register(acry_dev);
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