linux-kernel - Re: linux-next: build warning after merge of the qcom tree

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Date:   Tue, 14 Apr 2020 22:04:20 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Stephen Boyd <swboyd@...omium.org>
Cc:     Andy Gross <agross@...nel.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: linux-next: build warning after merge of the qcom tree

On Tue 14 Apr 21:51 PDT 2020, Stephen Boyd wrote:

> Quoting Stephen Rothwell (2020-04-14 17:25:34)
> > Hi all,
> > 
> > After merging the qcom tree, today's linux-next build (x86_64
> > allmodconfig) produced this warning:
> > 
> > drivers/soc/qcom/cmd-db.c: In function 'cmd_db_debugfs_dump':
> > drivers/soc/qcom/cmd-db.c:281:30: warning: field width specifier '*' expects argument of type 'int', but argument 4 has type 'long unsigned int' [-Wformat=]
> >   281 |    seq_printf(seq, "0x%08x: %*pEp", le32_to_cpu(ent->addr),
> >       |                             ~^~
> >       |                              |
> >       |                              int
> >   282 |        sizeof(ent->id), ent->id);
> >       |        ~~~~~~~~~~~~~~~        
> >       |        |
> >       |        long unsigned int
> > 
> > Introduced by commit
> > 
> >   d6815c5c43d4 ("soc: qcom: cmd-db: Add debugfs dumping file")
> 
> Thanks. I didn't notice this warning. Looks like we need to cast
> sizeof() to int? Bjorn do you want another patch or does this get
> squashed in?
> 

It's in the middle of the patch stack, so I would prefer an additional
patch.

Regards,
Bjorn

> ---8<----
> diff --git a/drivers/soc/qcom/cmd-db.c b/drivers/soc/qcom/cmd-db.c
> index 6c308f92a13c..6b5c440c9dc3 100644
> --- a/drivers/soc/qcom/cmd-db.c
> +++ b/drivers/soc/qcom/cmd-db.c
> @@ -280,7 +280,7 @@ static int cmd_db_debugfs_dump(struct seq_file *seq, void *p)
>  		ent = rsc_to_entry_header(rsc);
>  		for (j = 0; j < le16_to_cpu(rsc->cnt); j++, ent++) {
>  			seq_printf(seq, "0x%08x: %*pEp", le32_to_cpu(ent->addr),
> -				   sizeof(ent->id), ent->id);
> +				   (int)sizeof(ent->id), ent->id);
>  
>  			len = le16_to_cpu(ent->len);
>  			if (len) {