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

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Date:   Tue, 24 Jul 2018 16:39:19 +1000
From:   Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>, gregkh@...uxfoundation.org
Cc:     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 fsi tree

On Tue, 2018-07-24 at 16:03 +1000, Stephen Rothwell wrote:
> Hi Benjamin,
> 
> After merging the fsi tree, today's linux-next build (x86_64 allmodconfig)
> produced this warning:

Ah thanks. It's a pair of missing "z" qualifiers in those dev_dbg.

This normally won't show as this driver can only be enabled on 32-bit
ARM, but COMPILE_TEST will allow you to build it on x86_64 thus
triggering the warning.

I've pushed a fix in the fsi tree.

Greg, do you want a new signed tag with the fix or that can wait
for my next pull request ? I have a last bunch of chardev conversions
and object lifetime fixes being reviewed that I was thinking of sending
later this week.

Cheers,
Ben.

> 
> In file included from include/linux/printk.h:336:0,
>                  from include/linux/kernel.h:14,
>                  from include/linux/delay.h:22,
>                  from drivers/fsi/fsi-master-ast-cf.c:8:
> drivers/fsi/fsi-master-ast-cf.c: In function 'fsi_master_acf_read':
> drivers/fsi/fsi-master-ast-cf.c:609:23: warning: format '%u' expects argument of type 'unsigned int', but argument 6 has type 'size_t {aka long unsigned int}' [-Wformat=]
>   dev_dbg(master->dev, "read id %d addr %x size %ud\n", id, addr, size);
>                        ^
> include/linux/dynamic_debug.h:135:39: note: in definition of macro 'dynamic_dev_dbg'
>    __dynamic_dev_dbg(&descriptor, dev, fmt, \
>                                        ^~~
> include/linux/device.h:1428:23: note: in expansion of macro 'dev_fmt'
>   dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
>                        ^~~~~~~
> drivers/fsi/fsi-master-ast-cf.c:609:2: note: in expansion of macro 'dev_dbg'
>   dev_dbg(master->dev, "read id %d addr %x size %ud\n", id, addr, size);
>   ^~~~~~~
> drivers/fsi/fsi-master-ast-cf.c: In function 'fsi_master_acf_write':
> drivers/fsi/fsi-master-ast-cf.c:634:23: warning: format '%u' expects argument of type 'unsigned int', but argument 6 has type 'size_t {aka long unsigned int}' [-Wformat=]
>   dev_dbg(master->dev, "write id %d addr %x size %ud raw_data: %08x\n",
>                        ^
> include/linux/dynamic_debug.h:135:39: note: in definition of macro 'dynamic_dev_dbg'
>    __dynamic_dev_dbg(&descriptor, dev, fmt, \
>                                        ^~~
> include/linux/device.h:1428:23: note: in expansion of macro 'dev_fmt'
>   dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
>                        ^~~~~~~
> drivers/fsi/fsi-master-ast-cf.c:634:2: note: in expansion of macro 'dev_dbg'
>   dev_dbg(master->dev, "write id %d addr %x size %ud raw_data: %08x\n",
>   ^~~~~~~
> 
> Introduced by commit
> 
>   6a794a27daca ("fsi: master-ast-cf: Add new FSI master using Aspeed ColdFire")
>