WARNING: unmet direct dependencies detected for FB_IOMEM_HELPERS
  Depends on [n]: HAS_IOMEM [=y] && FB_CORE [=n]
  Selected by [m]:
  - DRM_XE_DISPLAY [=y] && HAS_IOMEM [=y] && DRM [=m] && DRM_XE [=m] && DRM_XE [=m]=m [=m] && HAS_IOPORT [=y]

FB_IOMEM_HELPERS depends on FB_CORE, Select it before FB_IOMEM_HELPERS.

Fixes: 44e694958b95 ("drm/xe/display: Implement display support")
Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
---
 drivers/gpu/drm/xe/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/xe/Kconfig b/drivers/gpu/drm/xe/Kconfig
index 7d7995196702..fcf324f37d2d 100644
--- a/drivers/gpu/drm/xe/Kconfig
+++ b/drivers/gpu/drm/xe/Kconfig
@@ -53,6 +53,7 @@ config DRM_XE
 config DRM_XE_DISPLAY
 	bool "Enable display support"
 	depends on DRM_XE && DRM_XE=m && HAS_IOPORT
+	select FB_CORE
 	select FB_IOMEM_HELPERS
 	select I2C
 	select I2C_ALGOBIT
-- 
2.34.1

On Sat, Mar 22, 2025 at 05:55:21PM +0800, Yue Haibing wrote:
>WARNING: unmet direct dependencies detected for FB_IOMEM_HELPERS
>  Depends on [n]: HAS_IOMEM [=y] && FB_CORE [=n]
>  Selected by [m]:
>  - DRM_XE_DISPLAY [=y] && HAS_IOMEM [=y] && DRM [=m] && DRM_XE [=m] && DRM_XE [=m]=m [=m] && HAS_IOPORT [=y]
>
>FB_IOMEM_HELPERS depends on FB_CORE, Select it before FB_IOMEM_HELPERS.
>
>Fixes: 44e694958b95 ("drm/xe/display: Implement display support")
>Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
>---
> drivers/gpu/drm/xe/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
>diff --git a/drivers/gpu/drm/xe/Kconfig b/drivers/gpu/drm/xe/Kconfig
>index 7d7995196702..fcf324f37d2d 100644
>--- a/drivers/gpu/drm/xe/Kconfig
>+++ b/drivers/gpu/drm/xe/Kconfig
>@@ -53,6 +53,7 @@ config DRM_XE
> config DRM_XE_DISPLAY
> 	bool "Enable display support"
> 	depends on DRM_XE && DRM_XE=m && HAS_IOPORT
>+	select FB_CORE

other places in drm, including i915 where this is coming from, use:

	select FB_IOMEM_HELPERS if DRM_FBDEV_EMULATION

... and don't explicitly select FB_CORE. I think that is sufficient
following the chain of selects which ends up with DRM_CLIENT_LIB
selecting FB_CORE when DRM_FBDEV_EMULATION is set. Does that fixes it
for you?

Lucas De Marchi

On 2025/3/22 20:51, Lucas De Marchi wrote:
> On Sat, Mar 22, 2025 at 05:55:21PM +0800, Yue Haibing wrote:
>> WARNING: unmet direct dependencies detected for FB_IOMEM_HELPERS
>>  Depends on [n]: HAS_IOMEM [=y] && FB_CORE [=n]
>>  Selected by [m]:
>>  - DRM_XE_DISPLAY [=y] && HAS_IOMEM [=y] && DRM [=m] && DRM_XE [=m] && DRM_XE [=m]=m [=m] && HAS_IOPORT [=y]
>>
>> FB_IOMEM_HELPERS depends on FB_CORE, Select it before FB_IOMEM_HELPERS.
>>
>> Fixes: 44e694958b95 ("drm/xe/display: Implement display support")
>> Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
>> ---
>> drivers/gpu/drm/xe/Kconfig | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/gpu/drm/xe/Kconfig b/drivers/gpu/drm/xe/Kconfig
>> index 7d7995196702..fcf324f37d2d 100644
>> --- a/drivers/gpu/drm/xe/Kconfig
>> +++ b/drivers/gpu/drm/xe/Kconfig
>> @@ -53,6 +53,7 @@ config DRM_XE
>> config DRM_XE_DISPLAY
>>     bool "Enable display support"
>>     depends on DRM_XE && DRM_XE=m && HAS_IOPORT
>> +    select FB_CORE
> 
> other places in drm, including i915 where this is coming from, use:
> 
>     select FB_IOMEM_HELPERS if DRM_FBDEV_EMULATION
> 
> ... and don't explicitly select FB_CORE. I think that is sufficient
> following the chain of selects which ends up with DRM_CLIENT_LIB
> selecting FB_CORE when DRM_FBDEV_EMULATION is set. Does that fixes it
> for you?

Thanks, it works for this, will send v2 soon.
> 
> Lucas De Marchi
>