[PATCH] fixup! FIT: compare key name hint with streq_ptr for clarity

[Marco Felsch]

On 25-10-22, Ahmad Fatoum wrote:
> FIT: fix use of multiple FIT keys
> 
> streq_ptr returns true if both arguments are NULL. This can happen if we

Damn!

> have no FIT key name hints at all and shouldn't lead to ignoring keys,
> so add the check for the hint.
> 
> Cc: Marco Felsch <m.felsch at pengutronix.de>
> Reported-by: Jonas Rebmann <jre at pengutronix.de>
> Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>

Reviewed-by: Marco Felsch <m.felsch at pengutronix.de>

> ---
>  common/image-fit.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/common/image-fit.c b/common/image-fit.c
> index 3017ccb5048f..22f768e7a070 100644
> --- a/common/image-fit.c
> +++ b/common/image-fit.c
> @@ -290,8 +290,8 @@ static int fit_check_signature(struct fit_handle *handle, struct device_node *si
>  	for_each_public_key(key) {
>  		fail_reason = "verification failed";
>  
> -		/* Don't recheck with same key as before */
> -		if (streq_ptr(key->key_name_hint, key_name))
> +		/* Don't recheck with same key_name as before */
> +		if (key_name && streq_ptr(key->key_name_hint, key_name))
>  			continue;
>  
>  		ret = public_key_verify(key, sig_value, sig_len, hash, algo);
> -- 
> 2.47.3
> 
> 

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