linux-kernel - Re: [PATCH 4/4] ibmvfc: store return code of H_FREE_SUB

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Message-ID: <94321ded-7970-258c-cee9-222f7b2b511f@linux.vnet.ibm.com>
Date:   Tue, 16 Feb 2021 08:58:31 -0600
From:   Brian King <brking@...ux.vnet.ibm.com>
To:     Tyrel Datwyler <tyreld@...ux.ibm.com>,
        james.bottomley@...senpartnership.com
Cc:     martin.petersen@...cle.com, linux-scsi@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        brking@...ux.ibm.com
Subject: Re: [PATCH 4/4] ibmvfc: store return code of H_FREE_SUB_CRQ during
 cleanup

On 2/11/21 12:57 PM, Tyrel Datwyler wrote:
> diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
> index ba6fcf9cbc57..23b803ac4a13 100644
> --- a/drivers/scsi/ibmvscsi/ibmvfc.c
> +++ b/drivers/scsi/ibmvscsi/ibmvfc.c
> @@ -5670,7 +5670,7 @@ static int ibmvfc_register_scsi_channel(struct ibmvfc_host *vhost,
>  
>  irq_failed:
>  	do {
> -		plpar_hcall_norets(H_FREE_SUB_CRQ, vdev->unit_address, scrq->cookie);
> +		rc = plpar_hcall_norets(H_FREE_SUB_CRQ, vdev->unit_address, scrq->cookie);
>  	} while (rc == H_BUSY || H_IS_LONG_BUSY(rc));

Other places in the driver where we get a busy return code back we have an msleep(100).
Should we be doing that here as well?

Thanks,

Brian

-- 
Brian King
Power Linux I/O
IBM Linux Technology Center