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crypto: sun8i-ce - fix error return code in sun8i_ce_prng_generate() 

When dma_mapping_error() returns an error, no error return code of
sun8i_ce_prng_generate() is assigned.
To fix this bug, err is assigned with -EFAULT as error return code.

Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Acked-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Jia-Ju Bai 2021-03-04 17:57:17 -08:00 committed by Herbert Xu
parent 90274769cf
commit 282894556b
1 changed files with 1 additions and 0 deletions
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1
drivers/crypto/allwinner/sun8i-ce/sun8i-ce-prng.c
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@ -99,6 +99,7 @@ int sun8i_ce_prng_generate(struct crypto_rng *tfm, const u8 *src,
dma_iv = dma_map_single(ce->dev, ctx->seed, ctx->slen, DMA_TO_DEVICE);
if (dma_mapping_error(ce->dev, dma_iv)) {
dev_err(ce->dev, "Cannot DMA MAP IV\n");
err = -EFAULT;
goto err_iv;
}