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crypto: aspeed - add error handling if dmam_alloc_coherent() failed

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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>
This commit is contained in:
Neal Liu 2023-02-24 10:05:21 +08:00 committed by Herbert Xu
parent f84155ca85
commit a1862c3b08
1 changed files with 4 additions and 1 deletions
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5
drivers/crypto/aspeed/aspeed-acry.c
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@ -779,7 +779,10 @@ static int aspeed_acry_probe(struct platform_device *pdev)
acry_dev->buf_addr = dmam_alloc_coherent(dev, ASPEED_ACRY_BUFF_SIZE,
&acry_dev->buf_dma_addr,
GFP_KERNEL);
memzero_explicit(acry_dev->buf_addr, ASPEED_ACRY_BUFF_SIZE);
if (!acry_dev->buf_addr) {
rc = -ENOMEM;
goto err_engine_rsa_start;
}
aspeed_acry_register(acry_dev);