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SubjectRe: [PATCH] serial: parisc: GSC: fix build when PCI_LBA is not set
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On 2/13/22 22:07, Randy Dunlap wrote:
>
>
> On 2/13/22 12:35, Helge Deller wrote:
>> Hi Randy,
>>
>> On 2/13/22 20:39, Randy Dunlap wrote:
>>> There is a build error when using a kernel .config file from
>>> 'kernel test robot' for a different build problem:
>>>
>>> hppa64-linux-ld: drivers/tty/serial/8250/8250_gsc.o: in function `.LC3':
>>> (.data.rel.ro+0x18): undefined reference to `iosapic_serial_irq'
>>>
>>> when:
>>> CONFIG_GSC=y
>>> CONFIG_SERIO_GSCPS2=y
>>> CONFIG_SERIAL_8250_GSC=y
>>> CONFIG_PCI is not set
>>> and hence PCI_LBA is not set.
>>> IOSAPIC depends on PCI_LBA, so IOSAPIC is not set/enabled.
>>>
>>> Making SERIAL_8250_GSC depend on PCI_LBA prevents the build error.
>>
>> It maybe makes the build error go away, but ...
>>
>>> Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
>>> Reported-by: kernel test robot <lkp@intel.com>
>>> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
>>> Cc: Helge Deller <deller@gmx.de>
>>> Cc: linux-parisc@vger.kernel.org
>>> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>>> Cc: linux-serial@vger.kernel.org
>>> Cc: Jiri Slaby <jirislaby@kernel.org>
>>> Cc: Johan Hovold <johan@kernel.org>
>>> ---
>>> drivers/tty/serial/8250/Kconfig | 2 +-
>>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> --- linux-next-20220211.orig/drivers/tty/serial/8250/Kconfig
>>> +++ linux-next-20220211/drivers/tty/serial/8250/Kconfig
>>> @@ -118,7 +118,7 @@ config SERIAL_8250_CONSOLE
>>>
>>> config SERIAL_8250_GSC
>>> tristate
>>> - depends on SERIAL_8250 && GSC
>>> + depends on SERIAL_8250 && GSC && PCI_LBA
>>> default SERIAL_8250
>>
>> The serial device is on the GSC bus, so if you make it
>> dependend on the PCI bus it will not be useable on machines
>> which only have a GSC bus...
>>
>> We need another patch.
>> Do you have a link to the build error?
>
>
> No, it's from the other build error that you just replied to,
> where the incorrect compiler was used.
>
> I'll recheck it and reconsider what to do, if anything.

Ok, thank you!

By the way, I just sent another patch (and added it to the parisc for-next tree)
which should at least give a better error message if someone uses the wrong compiler:
https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/commit/?h=for-next&id=b160628e9ebcdc85d0db9d7f423c26b3c7c179d0

Helge

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