Re: [soc:soc/drivers 20/24] ERROR: modpost: "__ffsdi2" [drivers/platform/cznic/turris-omnia-mcu.ko] undefined!

On Fri, Mar 21, 2025, at 03:41, kernel test robot wrote:
> Hi Marek,
>
> First bad commit (maybe != root cause):
>
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git 
> soc/drivers
> head:   ba8755ab541fc629948233125db870d4dbf00a75
> commit: ee7f8ed72990f28657b5bf598e695fcf4633f4ed [20/24] platform: 
> cznic: turris-omnia-mcu: Refactor requesting MCU interrupt
> config: sh-allmodconfig 
> (https://download.01.org/0day-ci/archive/20250321/[email protected]/config)
> compiler: sh4-linux-gcc (GCC) 14.2.0
> reproduce (this is a W=1 build): 
> (https://download.01.org/0day-ci/archive/20250321/[email protected]/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 <[email protected]>
> | Closes: 
> https://lore.kernel.org/oe-kbuild-all/[email protected]/
>
> All errors (new ones prefixed by >>, old ones prefixed by <<):
>
> ERROR: modpost: "__delay" [drivers/net/mdio/mdio-cavium.ko] undefined!
> ERROR: modpost: "devm_of_clk_add_hw_provider" 
> [drivers/media/i2c/tc358746.ko] undefined!
> ERROR: modpost: "devm_clk_hw_register" [drivers/media/i2c/tc358746.ko] 
> undefined!
> ERROR: modpost: "of_clk_hw_simple_get" [drivers/media/i2c/tc358746.ko] 
> undefined!
>>> ERROR: modpost: "__ffsdi2" [drivers/platform/cznic/turris-omnia-mcu.ko] undefined!

This comes from __bf_shf(spec) in omnia_mcu_request_irq().

As far as I can tell, this is not your problem but in the
SH architecture missing one of the libgcc functions that are
called by gcc.

Since this is only for compile-testing sh allmodconfig, and
that is already broken because of other bugs, I'm not going
to care either.

Adding the linux-sh list to Cc, it would be nice to get a clean
build again. All four problems should be trivial to address,
and some of these have been broken for many years.

      Arnd