linux-kernel - RE: [EXT] Re: [net-next, 1/2] enetc: Configure the Time-Aware Scheduler via tc-taprio offload

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Date:   Wed, 13 Nov 2019 04:55:12 +0000
From:   Po Liu <po.liu@....com>
To:     David Miller <davem@...emloft.net>,
        "simon.horman@...ronome.com" <simon.horman@...ronome.com>
CC:     Claudiu Manoil <claudiu.manoil@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "vinicius.gomes@...el.com" <vinicius.gomes@...el.com>,
        Vladimir Oltean <vladimir.oltean@....com>,
        Alexandru Marginean <alexandru.marginean@....com>,
        Xiaoliang Yang <xiaoliang.yang_1@....com>,
        Roy Zang <roy.zang@....com>, Mingkai Hu <mingkai.hu@....com>,
        Jerry Huang <jerry.huang@....com>, Leo Li <leoyang.li@....com>
Subject: RE: [EXT] Re: [net-next, 1/2] enetc: Configure the Time-Aware
 Scheduler via tc-taprio offload

Hi David,

Thanks!
Br,
Po Liu

> -----Original Message-----
> From: David Miller <davem@...emloft.net>
> Sent: 2019年11月13日 3:00
> To: simon.horman@...ronome.com
> Cc: Po Liu <po.liu@....com>; Claudiu Manoil <claudiu.manoil@....com>;
> linux-kernel@...r.kernel.org; netdev@...r.kernel.org;
> vinicius.gomes@...el.com; Vladimir Oltean <vladimir.oltean@....com>;
> Alexandru Marginean <alexandru.marginean@....com>; Xiaoliang Yang
> <xiaoliang.yang_1@....com>; Roy Zang <roy.zang@....com>; Mingkai Hu
> <mingkai.hu@....com>; Jerry Huang <jerry.huang@....com>; Leo Li
> <leoyang.li@....com>
> Subject: [EXT] Re: [net-next, 1/2] enetc: Configure the Time-Aware Scheduler via
> tc-taprio offload
> 
> Caution: EXT Email
> 
> From: David Miller <davem@...emloft.net>
> Date: Tue, 12 Nov 2019 10:58:59 -0800 (PST)
> 
> >
> > Oops, I didn't see this feedback because v2 had been posted.
> >
> > I'll revert that now.
> >
> > Please address Simon's feedback on these two patches, and then post a
> > v3, thank you.
> 
> Also, v2 doesn't even compile :-(
> 
> In file included from drivers/net/ethernet/freescale/enetc/enetc.h:14,
>                  from drivers/net/ethernet/freescale/enetc/enetc_qos.c:4:
> drivers/net/ethernet/freescale/enetc/enetc_qos.c: In function
> ʽenetc_setup_tc_taprioʼ:
> drivers/net/ethernet/freescale/enetc/enetc_hw.h:308:32: warning: ʽtempʼ may
> be used uninitialized in this function [-Wmaybe-uninitialized]  #define
> enetc_wr_reg(reg, val) iowrite32((val), (reg))
>                                 ^~~~~~~~~
> drivers/net/ethernet/freescale/enetc/enetc_qos.c:59:6: note: ʽtempʼ was
> declared here

More delete one line. Will fix in v3.

>   u32 temp;
>       ^~~~
> ERROR: "enetc_sched_speed_set" [drivers/net/ethernet/freescale/enetc/fsl-
> enetc-vf.ko] undefined!
> ERROR: "enetc_setup_tc_taprio" [drivers/net/ethernet/freescale/enetc/fsl-
> enetc-vf.ko] undefined!
> make[1]: *** [scripts/Makefile.modpost:94: __modpost] Error 1
> make: *** [Makefile:1282: modules] Error 2

I got this situation. 
It happened when set module mode, since vf drvier should not own the taprio set.
Thanks!