On 04/05/2018 01:05 PM, Benjamin Gaignard wrote:
> 2018-04-03 7:34 GMT+02:00 Oliver O'Halloran <oohall@xxxxxxxxx>:
>> Commit cc6b741c6f63 ("drm: sti: remove useless fields from vtg
>> structure") reworked some code inside of this driver and made it select
>> CONFIG_OF. This results in the entire OF layer being enabled when
>> building an allmodconfig on ia64. OF on ia64 is completely unsupported
>> so this isn't a great state of affairs.
>>
>> The 0day robot noticed a link-time failure on ia64 caused by
>> using of_node_to_nid() in an otherwise unrelated driver. The
>> generic fallback for of_node_to_nid() only exists when:
>>
>> defined(CONFIG_OF) && defined(CONFIG_NUMA) == false
>>
>> Since CONFIG_NUMA is usually selected for IA64 we get the link failure.
>> Fix this by making the driver depend on OF rather than selecting it,
>> odds are that was the original intent.
>>
>> Link: https://lists.01.org/pipermail/kbuild-all/2018-March/045172.html
>> Fixes: cc6b741c6f63 ("drm: sti: remove useless fields from vtg structure")
>> Cc: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxx>
>> Cc: Vincent Abriou <vincent.abriou@xxxxxx>
>> Cc: David Airlie <airlied@xxxxxxxx>
>> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
>> Cc: linux-ia64@xxxxxxxxxxxxxxx
>> Cc: stable@xxxxxxxxxxxxxxx
>> Signed-off-by: Oliver O'Halloran <oohall@xxxxxxxxx>
>
> Reviewed-by: Benjamin Gaignard <benjamin.gaignard@xxxxxxxxxx>
Applied on drm-misc-next
Many thanks for your patch,
Philippe :-)
>
>> ---
>> Cc`ed to stable since the ia64 guys might want it backported. I'm not
>> bothered if it just goes into mainline.
>> ---
>> drivers/gpu/drm/sti/Kconfig | 3 +--
>> 1 file changed, 1 insertion(+), 2 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/sti/Kconfig b/drivers/gpu/drm/sti/Kconfig
>> index cca4b3c9aeb5..1963cc1b1cc5 100644
>> --- a/drivers/gpu/drm/sti/Kconfig
>> +++ b/drivers/gpu/drm/sti/Kconfig
>> @@ -1,6 +1,6 @@
>> config DRM_STI
>> tristate "DRM Support for STMicroelectronics SoC stiH4xx Series"
>> - depends on DRM && (ARCH_STI || ARCH_MULTIPLATFORM)
>> + depends on OF && DRM && (ARCH_STI || ARCH_MULTIPLATFORM)
>> select RESET_CONTROLLER
>> select DRM_KMS_HELPER
>> select DRM_GEM_CMA_HELPER
>> @@ -8,6 +8,5 @@ config DRM_STI
>> select DRM_PANEL
>> select FW_LOADER
>> select SND_SOC_HDMI_CODEC if SND_SOC
>> - select OF
>> help
>> Choose this option to enable DRM on STM stiH4xx chipset
>> --
>> 2.9.5
>>
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