RE: [EXTERNAL] [PATCH] crypto: octeontx2 - add missing check for dma_map_single

[Bharat Bhushan]

> -----Original Message-----
> From: Chen Ni <nichen@xxxxxxxxxxx>
> Sent: Monday, April 8, 2024 7:29 AM
> To: bbrezillon@xxxxxxxxxx; arno@xxxxxxxxxxxx; Srujana Challa
> <schalla@xxxxxxxxxxx>; herbert@xxxxxxxxxxxxxxxxxxx;
> davem@xxxxxxxxxxxxx
> Cc: linux-crypto@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Chen Ni
> <nichen@xxxxxxxxxxx>
> Subject: [EXTERNAL] [PATCH] crypto: octeontx2 - add missing check for
> dma_map_single
> 
> ----------------------------------------------------------------------
> Add check for dma_map_single() and return error if it fails in order to avoid
> invalid dma address.
> 
> Fixes: e92971117c2c ("crypto: octeontx2 - add ctx_val workaround")
> Signed-off-by: Chen Ni <nichen@xxxxxxxxxxx>
> ---
>  drivers/crypto/marvell/octeontx2/cn10k_cpt.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/crypto/marvell/octeontx2/cn10k_cpt.c
> b/drivers/crypto/marvell/octeontx2/cn10k_cpt.c
> index 79b4e74804f6..6bfc59e67747 100644
> --- a/drivers/crypto/marvell/octeontx2/cn10k_cpt.c
> +++ b/drivers/crypto/marvell/octeontx2/cn10k_cpt.c
> @@ -138,6 +138,10 @@ int cn10k_cpt_hw_ctx_init(struct pci_dev *pdev,
>  		return -ENOMEM;
>  	cptr_dma = dma_map_single(&pdev->dev, hctx,
> CN10K_CPT_HW_CTX_SIZE,
>  				  DMA_BIDIRECTIONAL);
> +	if (dma_mapping_error(&pdev->dev, cptr_dma)) {
> +		kfree(hctx);
> +		return -ENOMEM;
> +	}

Thanks for fixing,
Reviewed-by: Bharat Bhushan <bbhushan2@xxxxxxxxxxx>

> 
>  	cn10k_cpt_hw_ctx_set(hctx, 1);
>  	er_ctx->hw_ctx = hctx;
> --
> 2.25.1
>