linux-kernel - RE: [PATCH 2/3] EDAC: synopsys: Reorganizing the output message for CE/UE

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Date:   Thu, 27 Feb 2020 07:09:29 +0000
From:   Sherry Sun <sherry.sun@....com>
To:     James Morse <james.morse@....com>
CC:     "bp@...en8.de" <bp@...en8.de>,
        "mchehab@...nel.org" <mchehab@...nel.org>,
        "tony.luck@...el.com" <tony.luck@...el.com>,
        "rrichter@...vell.com" <rrichter@...vell.com>,
        "michal.simek@...inx.com" <michal.simek@...inx.com>,
        "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>, Frank Li <frank.li@....com>
Subject: RE: [PATCH 2/3] EDAC: synopsys: Reorganizing the output message for
 CE/UE

Hi James,

> -----Original Message-----
> From: linux-edac-owner@...r.kernel.org <linux-edac-
> owner@...r.kernel.org> On Behalf Of James Morse
> Sent: 2020年2月27日 1:49
> To: Sherry Sun <sherry.sun@....com>
> Cc: bp@...en8.de; mchehab@...nel.org; tony.luck@...el.com;
> rrichter@...vell.com; michal.simek@...inx.com; linux-
> edac@...r.kernel.org; linux-arm-kernel@...ts.infradead.org; linux-
> kernel@...r.kernel.org; dl-linux-imx <linux-imx@....com>; Frank Li
> <frank.li@....com>
> Subject: Re: [PATCH 2/3] EDAC: synopsys: Reorganizing the output message
> for CE/UE
> 
> Hi Sherry,
> 
> On 24/02/2020 09:42, Sherry Sun wrote:
> > The origin way which call sprintf() function two or three times to
> 
> (original? 'The current way' may be better)
> 

Sorry for that, I will correct it to 'The current way'.

> 
> > output message for CE/UE is incorrect, because it won't output all the
> > message needed, instead it will only output the last message in
> > sprintf().
> 
> Nice!
> 
> 
> > So the simplest and most effective way to fix this problem is
> > reorganizing all the output message needed for CE/UE into one
> > sprintf() function.
> 
> This is a bug, but its in the middle of a series doing some cleanup, meaning
> the maintainer can't easily pick it up in isolation. Could you post it separately?
> 
> 'Reorganize' in the subject makes this sound like cleanup. Would "EDAC:
> synopsys: Fix back to back snprintf() messages for CE/UE" be better?
> 

Sure, I will send this patch separately, and will correct the subject as you suggested.

> 
> Please add:
> Fixes: b500b4a029d57 ("EDAC, synopsys: Add ECC support for ZynqMP DDR
> controller")
> 
> in the signed-off-by area so that stable trees pick this up.
> 
> and for what its worth:
> Reviewed-by: James Morse <james.morse@....com>
> 
> 

Thanks, I will add it.

Best regards
Sherry Sun

> Thanks!
> 
> James
> 
> 
> 
> > diff --git a/drivers/edac/synopsys_edac.c
> > b/drivers/edac/synopsys_edac.c index 7046b8929522..ef7e907c7956
> 100644
> > --- a/drivers/edac/synopsys_edac.c
> > +++ b/drivers/edac/synopsys_edac.c
> > @@ -485,20 +485,14 @@ static void handle_error(struct mem_ctl_info
> *mci, struct synps_ecc_status *p)
> >  		pinf = &p->ceinfo;
> >  		if (!priv->p_data->quirks) {
> >  			snprintf(priv->message, SYNPS_EDAC_MSG_SIZE,
> > -				 "DDR ECC error type:%s Row %d Bank %d
> Col %d ",
> > -				  "CE", pinf->row, pinf->bank, pinf->col);
> > -			snprintf(priv->message, SYNPS_EDAC_MSG_SIZE,
> > -				 "Bit Position: %d Data: 0x%08x\n",
> > +				 "DDR ECC error type:%s Row %d Bank %d
> Col %d Bit Position: %d Data: 0x%08x",
> > +				 "CE", pinf->row, pinf->bank, pinf->col,
> >  				 pinf->bitpos, pinf->data);
> >  		} else {
> >  			snprintf(priv->message, SYNPS_EDAC_MSG_SIZE,
> > -				 "DDR ECC error type:%s Row %d Bank %d ",
> > -				  "CE", pinf->row, pinf->bank);
> > -			snprintf(priv->message, SYNPS_EDAC_MSG_SIZE,
> > -				 "BankGroup Number %d Block Number %d ",
> > -				 pinf->bankgrpnr, pinf->blknr);
> > -			snprintf(priv->message, SYNPS_EDAC_MSG_SIZE,
> > -				 "Bit Position: %d Data: 0x%08x\n",
> > +				 "DDR ECC error type:%s Row %d Bank %d
> BankGroup Number %d Block Number %d Bit Position: %d Data: 0x%08x",
> > +				 "CE", pinf->row, pinf->bank,
> > +				 pinf->bankgrpnr, pinf->blknr,
> >  				 pinf->bitpos, pinf->data);
> >  		}
> >
> > @@ -515,10 +509,8 @@ static void handle_error(struct mem_ctl_info *mci,
> struct synps_ecc_status *p)
> >  				"UE", pinf->row, pinf->bank, pinf->col);
> >  		} else {
> >  			snprintf(priv->message, SYNPS_EDAC_MSG_SIZE,
> > -				 "DDR ECC error type :%s Row %d Bank %d ",
> > -				 "UE", pinf->row, pinf->bank);
> > -			snprintf(priv->message, SYNPS_EDAC_MSG_SIZE,
> > -				 "BankGroup Number %d Block Number %d",
> > +				 "DDR ECC error type :%s Row %d Bank %d
> BankGroup Number %d Block Number %d",
> > +				 "UE", pinf->row, pinf->bank,
> >  				 pinf->bankgrpnr, pinf->blknr);
> >  		}
> >
> >