linux-kernel - Re: [PATCH 1/1] s390: vfio-ap: fix warning reset not completed

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Message-Id: <9af2dd28-a2ce-769c-f90c-dd079c967022@de.ibm.com>
Date:   Wed, 4 Sep 2019 09:25:24 +0200
From:   Christian Borntraeger <borntraeger@...ibm.com>
To:     Halil Pasic <pasic@...ux.ibm.com>,
        Tony Krowiak <akrowiak@...ux.ibm.com>,
        Harald Freudenberger <freude@...ux.ibm.com>,
        linux-s390@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Heiko Carstens <heiko.carstens@...ibm.com>,
        Cornelia Huck <cohuck@...hat.com>
Subject: Re: [PATCH 1/1] s390: vfio-ap: fix warning reset not completed

On 03.09.19 15:36, Halil Pasic wrote:
> The intention seems to be to warn once when we don't wait enough for the
> reset to complete. Let's use the right retry counter to accomplish that
> semantic.
> 
> Signed-off-by: Halil Pasic <pasic@...ux.ibm.com>

Thanks applied.

I will let it sit in our tree for some days as I want to see if we actually
hit the WARN_ON now. So if there is an rc8 this will be part of the next 
merge window, otherwise this will somewhat come later.
> ---
>  drivers/s390/crypto/vfio_ap_ops.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c
> index 0604b49a4d32..5c0f53c6dde7 100644
> --- a/drivers/s390/crypto/vfio_ap_ops.c
> +++ b/drivers/s390/crypto/vfio_ap_ops.c
> @@ -1143,7 +1143,7 @@ int vfio_ap_mdev_reset_queue(unsigned int apid, unsigned int apqi,
>  				msleep(20);
>  				status = ap_tapq(apqn, NULL);
>  			}
> -			WARN_ON_ONCE(retry <= 0);
> +			WARN_ON_ONCE(retry2 <= 0);
>  			return 0;
>  		case AP_RESPONSE_RESET_IN_PROGRESS:
>  		case AP_RESPONSE_BUSY:
>