netdev - RE: [PATCH v2] sh_eth: remove unchecked interrupts

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Message-ID: <SG2PR06MB1165C7D7B7DFBAC4B5BAB09A8A8F0@SG2PR06MB1165.apcprd06.prod.outlook.com>
Date:   Thu, 1 Dec 2016 18:53:22 +0000
From:   Chris Brandt <Chris.Brandt@...esas.com>
To:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>
CC:     David Miller <davem@...emloft.net>,
        Simon Horman <horms+renesas@...ge.net.au>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>
Subject: RE: [PATCH v2] sh_eth: remove unchecked interrupts

Hi Geert,

On 12/1/2016, Sergei Shtylyov wrote:
> 
> On 12/01/2016 05:42 PM, Geert Uytterhoeven wrote:
> 
> >> --- a/drivers/net/ethernet/renesas/sh_eth.c
> >> +++ b/drivers/net/ethernet/renesas/sh_eth.c
> >> @@ -518,7 +518,7 @@ static struct sh_eth_cpu_data r7s72100_data = {
> >>
> >>         .ecsr_value     = ECSR_ICD,
> >>         .ecsipr_value   = ECSIPR_ICDIP,
> >> -       .eesipr_value   = 0xff7f009f,
> >> +       .eesipr_value   = 0xe77f009f,
> >
> > Comment not directly related to the merits of this patch: the EESIPR
> > bit definitions seem to be identical to those for EESR, so we can get
> > rid of the hardcoded values here?
> 
>     Do you mean using the @define's? We have EESIPR bits also declared,
> see enum DMAC_IM_BIT,


Is your idea to get rid of .eesipr_value for devices that have values
that are the same as .eesr_err_check?


For example in sh_eth_dev_init():

	sh_eth_modify(ndev, EESR, 0, 0);
	mdp->irq_enabled = true;
-	sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
+	if (mdp->cd->eesipr_value)
+		sh_eth_write(ndev, mdp->cd->eesipr_value, EESIPR);
+	else
+		sh_eth_write(ndev, mdp->cd->eesr_err_check, EESIPR);


Chris