netdev - Re: [PATCH net-next v2 1/4] enetc: Introduce basic PF and VF ENETC ethernet drivers

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Date:   Thu, 22 Nov 2018 19:05:57 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Claudiu Manoil <claudiu.manoil@....com>
Cc:     David Miller <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Alexandru Marginean <alexandru.marginean@....com>,
        Catalin Horghidan <catalin.horghidan@....com>
Subject: Re: [PATCH net-next v2 1/4] enetc: Introduce basic PF and VF ENETC
 ethernet drivers

On Thu, Nov 22, 2018 at 01:06:01PM +0000, Claudiu Manoil wrote:
> >-----Original Message-----
> >From: David Miller <davem@...emloft.net>
> >Sent: Thursday, November 22, 2018 2:21 AM
> >To: Claudiu Manoil <claudiu.manoil@....com>
> >Cc: netdev@...r.kernel.org; linux-kernel@...r.kernel.org; Alexandru
> >Marginean <alexandru.marginean@....com>; Catalin Horghidan
> ><catalin.horghidan@....com>
> >Subject: Re: [PATCH net-next v2 1/4] enetc: Introduce basic PF and VF ENETC
> >ethernet drivers
> >
> >From: Claudiu Manoil <claudiu.manoil@....com>
> >Date: Tue, 20 Nov 2018 20:15:31 +0200
> >
> >> diff --git a/drivers/net/ethernet/freescale/Makefile
> >b/drivers/net/ethernet/freescale/Makefile
> >> index 3b4ff08..20e5c2f9 100644
> >> --- a/drivers/net/ethernet/freescale/Makefile
> >> +++ b/drivers/net/ethernet/freescale/Makefile
> >> @@ -23,3 +23,4 @@ obj-$(CONFIG_FSL_FMAN) += fman/
> >>  obj-$(CONFIG_FSL_DPAA_ETH) += dpaa/
> >>
> >>  obj-$(CONFIG_FSL_DPAA2_ETH) += dpaa2/
> >> +obj-$(CONFIG_NET_VENDOR_FREESCALE) += enetc/
> >
> >The driver enable Kconfig option should guard traversing into the
> >driver subdirectory, not the vendor enable Kconfig knob.
> 
> The enetc/ dir contains 2 drivers, that share a lot of common code.
> Would you agree if I change the vendor enable with the two configs
> (one for each driver) as below?
> 
> -obj-$(CONFIG_NET_VENDOR_FREESCALE) += enetc/
> +obj-$(CONFIG_FSL_ENETC) += enetc/
> +obj-$(CONFIG_FSL_ENETC_VF) += enetc/

CONFIG_NET_VENDOR_FREESCALE should hide/show all Freescale drivers.

Once you show all Freescale drivers, there should be an option to
enable each individual driver.

Does the ENETC_VF driver depend on the ENETC driver? If so, when
CONFIG_FSL_ENETC is enabled, the CONFIG_FSL_ENETC_VF should be
unhidden.

	Andrew