Re: [PATCH -next] crypto: fix missing unlock on error in safexcel_ahash_send_req()

[Antoine Tenart <antoine.tenart@bootlin.com>]

Hi Wei,

On Tue, Mar 13, 2018 at 02:54:03PM +0000, Wei Yongjun wrote:
> Add the missing unlock before return from function
> safexcel_ahash_send_req() in the error handling case.
> 
> Fixes: cff9a17545a3 ("crypto: inside-secure - move cache result dma mapping to request")
> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>

Acked-by: Antoine Tenart <antoine.tenart@bootlin.com>

Thanks!
Antoine

> ---
>  drivers/crypto/inside-secure/safexcel_hash.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/crypto/inside-secure/safexcel_hash.c b/drivers/crypto/inside-secure/safexcel_hash.c
> index 77268c9..6e9eb9b 100644
> --- a/drivers/crypto/inside-secure/safexcel_hash.c
> +++ b/drivers/crypto/inside-secure/safexcel_hash.c
> @@ -236,8 +236,10 @@ static int safexcel_ahash_send_req(struct crypto_async_request *async, int ring,
>  	if (cache_len) {
>  		req->cache_dma = dma_map_single(priv->dev, req->cache,
>  						cache_len, DMA_TO_DEVICE);
> -		if (dma_mapping_error(priv->dev, req->cache_dma))
> +		if (dma_mapping_error(priv->dev, req->cache_dma)) {
> +			spin_unlock_bh(&priv->ring[ring].egress_lock);
>  			return -EINVAL;
> +		}
>  
>  		req->cache_sz = cache_len;
>  		first_cdesc = safexcel_add_cdesc(priv, ring, 1,
> 

-- 
Antoine Ténart, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com
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