netdev - Re: [PATCH net-next v2 3/6] bus: fsl-mc: return -EPROBE_DEFER when a device is not yet discovered

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Message-ID: <X/ob7cm/NOt5qnZ4@lunn.ch>
Date:   Sat, 9 Jan 2021 22:11:09 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Ioana Ciornei <ciorneiioana@...il.com>
Cc:     davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org,
        laurentiu.tudor@....com, Ioana Ciornei <ioana.ciornei@....com>
Subject: Re: [PATCH net-next v2 3/6] bus: fsl-mc: return -EPROBE_DEFER when a
 device is not yet discovered

On Fri, Jan 08, 2021 at 11:07:24AM +0200, Ioana Ciornei wrote:
> From: Ioana Ciornei <ioana.ciornei@....com>
> 
> The fsl_mc_get_endpoint() should return a pointer to the connected
> fsl_mc device, if there is one. By interrogating the MC firmware, we
> know if there is an endpoint or not so when the endpoint device is
> actually searched on the fsl-mc bus and not found we are hitting the
> case in which the device has not been yet discovered by the bus.
> 
> Return -EPROBE_DEFER so that callers can differentiate this case.
> 
> Signed-off-by: Ioana Ciornei <ioana.ciornei@....com>
> Acked-by: Laurentiu Tudor <laurentiu.tudor@....com>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew