netdev - Re: [PATCH net-next] ibmvnic: Harden device Command Response Queue handshake

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Message-Id: <20200901.131555.825703470553661959.davem@davemloft.net>
Date:   Tue, 01 Sep 2020 13:15:55 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     tlfalcon@...ux.ibm.com
Cc:     netdev@...r.kernel.org, drt@...ux.vnet.ibm.com,
        sukadev@...ux.vnet.ibm.com, ljp@...ux.vnet.ibm.com,
        cforno12@...ux.ibm.com
Subject: Re: [PATCH net-next] ibmvnic: Harden device Command Response Queue
 handshake

From: Thomas Falcon <tlfalcon@...ux.ibm.com>
Date: Mon, 31 Aug 2020 11:59:57 -0500

> In some cases, the device or firmware may be busy when the
> driver attempts to perform the CRQ initialization handshake.
> If the partner is busy, the hypervisor will return the H_CLOSED
> return code. The aim of this patch is that, if the device is not
> ready, to query the device a number of times, with a small wait
> time in between queries. If all initialization requests fail,
> the driver will remain in a dormant state, awaiting a signal
> from the device that it is ready for operation.
> 
> Signed-off-by: Thomas Falcon <tlfalcon@...ux.ibm.com>

Applied to net-next, thank you.