linux-kernel - Re: [PATCH] crypto/nx: add missing call to of_node

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Date:   Thu, 25 Feb 2021 22:15:45 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Yang Li <yang.lee@...ux.alibaba.com>, herbert@...dor.apana.org.au
Cc:     davem@...emloft.net, benh@...nel.crashing.org, paulus@...ba.org,
        linux-crypto@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, Yang Li <yang.lee@...ux.alibaba.com>
Subject: Re: [PATCH] crypto/nx: add missing call to of_node_put()

Yang Li <yang.lee@...ux.alibaba.com> writes:
> In one of the error paths of the for_each_child_of_node() loop,
> add missing call to of_node_put().
>
> Fix the following coccicheck warning:
> ./drivers/crypto/nx/nx-common-powernv.c:927:1-23: WARNING: Function
> "for_each_child_of_node" should have of_node_put() before return around
> line 936.
>
> Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
> Signed-off-by: Yang Li <yang.lee@...ux.alibaba.com>
> ---
>  drivers/crypto/nx/nx-common-powernv.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/crypto/nx/nx-common-powernv.c b/drivers/crypto/nx/nx-common-powernv.c
> index 13c65de..b43c457 100644
> --- a/drivers/crypto/nx/nx-common-powernv.c
> +++ b/drivers/crypto/nx/nx-common-powernv.c
> @@ -933,6 +933,7 @@ static int __init nx_powernv_probe_vas(struct device_node *pn)
>  				NX_CT_GZIP, "ibm,p9-nx-gzip", &ct_gzip);
>  
>  		if (ret)
> +			of_node_put(dn);
>  			return ret;

Sorry this is wrong, the if needs braces.

cheers