Subject: Re: [PATCH] octeontx2-pf: Add check for devm_kcalloc

From: Maciej Fijalkowski <[email-masked]>
Date: Tue, 22 Nov 2022 13:00:06 +0100

On Tue, Nov 22, 2022 at 01:54:49PM +0800, Jiasheng Jiang wrote:
> As the devm_kcalloc may return NULL pointer,
> it should be better to add check for the return
> value, as same as the others.
> 
> Fixes: e8e095b3b370 ("octeontx2-af: cn10k: Bandwidth profiles config support")
> Signed-off-by: Jiasheng Jiang <[email-masked]>
> ---
>  drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> index 7646bb2ec89b..a62c1b322012 100644
> --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c
> @@ -4985,6 +4985,8 @@ static int nix_setup_ipolicers(struct rvu *rvu,
>  		ipolicer->ref_count = devm_kcalloc(rvu->dev,
>  						   ipolicer->band_prof.max,
>  						   sizeof(u16), GFP_KERNEL);
> +		if (!ipolicer->ref_count)
> +			return -ENOMEM;

So every other successful devm_kcalloc() calls in here don't have to be
explicitly freed in case of an error as in the end rvu_nix_init() will
fail and therefore the probe() itself.

Reviewed-by: Maciej Fijalkowski <[email-masked]>

Please also remember to state which tree you are targetting your patch
(this is a fix so you should have [PATCH net])

>  	}
>  
>  	/* Set policer timeunit to 2us ie  (19 + 1) * 100 nsec = 2us */
> -- 
> 2.25.1
>