On 12/28/2018 07:03 PM, Randy Dunlap wrote:
> On 12/28/18 7:15 AM, Bartlomiej Zolnierkiewicz wrote:
>> Making FB_BACKLIGHT tristate by commit b4a1ed0cd18b ("fbdev:
>> make FB_BACKLIGHT a tristate") caused unmet dependencies in
>> some configurations:
>>
>> WARNING: unmet direct dependencies detected for FB_BACKLIGHT
>> Depends on [m]: HAS_IOMEM [=y] && FB [=m]
>> Selected by [y]:
>> - DRM_NOUVEAU [=y] && HAS_IOMEM [=y] && DRM [=y] && PCI [=y] && MMU [=y]
>> && DRM_NOUVEAU_BACKLIGHT [=y]
>> Selected by [m]:
>> - FB_NVIDIA [=m] && HAS_IOMEM [=y] && FB [=m] && PCI [=y] &&
>> FB_NVIDIA_BACKLIGHT [=y]
>>
>> Fix it by making DRM_NOUVEAU select BACKLIGHT_CLASS_DEVICE and
>> BACKLIGHT_LCD_SUPPORT instead of FB_BACKLIGHT.
>>
>> Fixes: b4a1ed0cd18b ("fbdev: make FB_BACKLIGHT a tristate")
>> Reported-by: Randy Dunlap <[email protected]>
>> Cc: Rob Clark <[email protected]>
>> Cc: Arnd Bergmann <[email protected]>
>> Cc: Ben Skeggs <[email protected]>
>> Cc: David Airlie <[email protected]>
>> Cc: Daniel Vetter <[email protected]>
>> Cc: Stephen Rothwell <[email protected]>
>> Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
>
> Works for me. Thanks.
>
> Acked-by: Randy Dunlap <[email protected]> # build-tested
Thanks, I queued the patch for 4.21.
>> ---
>> I would like to merge this patch through fbdev tree for v4.21
>> (as it is needed to fix commit currently in fbdev tree).
>>
>> drivers/gpu/drm/nouveau/Kconfig | 3 ++-
>> 1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> Index: b/drivers/gpu/drm/nouveau/Kconfig
>> ===================================================================
>> --- a/drivers/gpu/drm/nouveau/Kconfig 2018-11-30 11:46:55.716464505
>> +0100
>> +++ b/drivers/gpu/drm/nouveau/Kconfig 2018-12-28 14:54:51.655965845
>> +0100
>> @@ -4,7 +4,8 @@ config DRM_NOUVEAU
>> select FW_LOADER
>> select DRM_KMS_HELPER
>> select DRM_TTM
>> - select FB_BACKLIGHT if DRM_NOUVEAU_BACKLIGHT
>> + select BACKLIGHT_CLASS_DEVICE if DRM_NOUVEAU_BACKLIGHT
>> + select BACKLIGHT_LCD_SUPPORT if DRM_NOUVEAU_BACKLIGHT
>> select ACPI_VIDEO if ACPI && X86 && BACKLIGHT_CLASS_DEVICE && INPUT
>> select X86_PLATFORM_DEVICES if ACPI && X86
>> select ACPI_WMI if ACPI && X86
Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics
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