linux-kernel - Re: [PATCH 2/2] mailbox: ti-msgmgr: Allow building under COMPILE

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Message-ID: <b6ddbcfa-91ce-4774-b577-08f41e773781@ti.com>
Date: Tue, 15 Oct 2024 16:34:34 -0500
From: Andrew Davis <afd@...com>
To: Arnd Bergmann <arnd@...db.de>, kernel test robot <lkp@...el.com>,
        Jassi
 Brar <jassisinghbrar@...il.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Martyn Welch
	<martyn.welch@...labora.com>,
        Hari Nagalla <hnagalla@...com>
CC: <oe-kbuild-all@...ts.linux.dev>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] mailbox: ti-msgmgr: Allow building under COMPILE_TEST

On 10/15/24 3:54 PM, Arnd Bergmann wrote:
> Hi Andrew,
> 
> On Tue, Oct 15, 2024, at 20:46, kernel test robot wrote:
>>     In file included from drivers/firmware/ti_sci.c:14:
>>     In file included from include/linux/io.h:14:
>>     In file included from arch/hexagon/include/asm/io.h:328:
>>     include/asm-generic/io.h:548:31: warning: performing pointer
>> arithmetic on a null pointer has undefined behavior
>> [-Wnull-pointer-arithmetic]
>>       548 |         val = __raw_readb(PCI_IOBASE + addr);
>>           |                           ~~~~~~~~~~ ^
>>     include/asm-generic/io.h:561:61: warning: performing pointer
>> arithmetic on a null pointer has undefined behavior
>> [-Wnull-pointer-arithmetic]
>>       561 |         val = __le16_to_cpu((__le16
>> __force)__raw_readw(PCI_IOBASE + addr));
>>           |
> 
> 
> Hopefully we will be able to finally address these in 6.13
> for all drivers, it's been a decade. Don't worry about
> the above.
> 
> 
>> platform_device *dev,
>>           |                    ^~~~~~~~~~~~~~~~~~~~~~
>>>> drivers/firmware/ti_sci.c:3285:34: warning: unused variable 'ti_sci_of_match' [-Wunused-const-variable]
>>      3285 | static const struct of_device_id ti_sci_of_match[] = {
>>           |                                  ^~~~~~~~~~~~~~~
>>     8 warnings generated.
>>
> 
> Needs this change, please fold into your patch.

Was going to clean this up in several places in another series,
but will add this one to this series, v2 on the way.

Andrew

> 
> diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c
> index 160968301b1f..6a6bf7a2d134 100644
> --- a/drivers/firmware/ti_sci.c
> +++ b/drivers/firmware/ti_sci.c
> @@ -3421,7 +3421,7 @@ static struct platform_driver ti_sci_driver = {
>          .probe = ti_sci_probe,
>          .driver = {
>                     .name = "ti-sci",
> -                  .of_match_table = of_match_ptr(ti_sci_of_match),
> +                  .of_match_table = ti_sci_of_match,
>                     .suppress_bind_attrs = true,
>          },
>   };
> 
>