linux-kernel - Re: [PATCH v1 04/12] i2c: isch: Switch to memory mapped IO accessors

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Message-ID: <Zuf1UJ6K_8hL5x5U@smile.fi.intel.com>
Date: Mon, 16 Sep 2024 12:07:28 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: kernel test robot <lkp@...el.com>
Cc: linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
	oe-kbuild-all@...ts.linux.dev, Jean Delvare <jdelvare@...e.com>,
	Andi Shyti <andi.shyti@...nel.org>
Subject: Re: [PATCH v1 04/12] i2c: isch: Switch to memory mapped IO accessors

On Sat, Sep 14, 2024 at 02:56:19PM +0800, kernel test robot wrote:
> Hi Andy,
> 
> kernel test robot noticed the following build warnings:
> 
> [auto build test WARNING on andi-shyti/i2c/i2c-host]
> [also build test WARNING on linus/master v6.11-rc7]
> [cannot apply to next-20240913]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Andy-Shevchenko/i2c-isch-Add-missed-else/20240912-002224
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux.git i2c/i2c-host
> patch link:    https://lore.kernel.org/r/20240911154820.2846187-5-andriy.shevchenko%40linux.intel.com
> patch subject: [PATCH v1 04/12] i2c: isch: Switch to memory mapped IO accessors
> config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20240914/202409141436.QFCDQrRF-lkp@intel.com/config)
> compiler: alpha-linux-gcc (GCC) 13.3.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240914/202409141436.QFCDQrRF-lkp@intel.com/reproduce)
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <lkp@...el.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202409141436.QFCDQrRF-lkp@intel.com/
> 
> All warnings (new ones prefixed by >>):
> 
>    drivers/i2c/busses/i2c-isch.c: In function 'smbus_sch_probe':
> >> drivers/i2c/busses/i2c-isch.c:296:42: warning: format '%x' expects argument of type 'unsigned int', but argument 4 has type 'resource_size_t' {aka 'long long unsigned int'} [-Wformat=]
>      296 |                 "SMBus SCH adapter at %04x", res->start);
>          |                                       ~~~^   ~~~~~~~~~~
>          |                                          |      |
>          |                                          |      resource_size_t {aka long long unsigned int}
>          |                                          unsigned int
>          |                                       %04llx

Yeah, this should be something like %pa, but the problem with that that it
always uses the same, fixed-width format with a prefix. We don't want this. But
to make sure we have proper specifier we need to introduce a temporary variable
and assign the resource start address to it and then use that variable in here.
I'll update this in v2 and send it after we have v6.12-rc1 is out.

-- 
With Best Regards,
Andy Shevchenko