* [PATCH next] drm/i915: fix build error without ACPI
@ 2020-01-13 13:27 Chen Zhou
2020-01-13 13:57 ` Jani Nikula
0 siblings, 1 reply; 2+ messages in thread
From: Chen Zhou @ 2020-01-13 13:27 UTC (permalink / raw)
To: jani.nikula, airlied, daniel; +Cc: dri-devel, linux-kernel, chenzhou10
If CONFIG_ACPI=n and CONFIG_BACKLIGHT_CLASS_DEVICE=m, compilation complains
with undefined references:
drivers/gpu/drm/i915/display/intel_panel.o: In function `intel_backlight_device_register':
intel_panel.c:(.text+0x4dd9): undefined reference to `backlight_device_register'
drivers/gpu/drm/i915/display/intel_panel.o: In function `intel_backlight_device_unregister':
intel_panel.c:(.text+0x4e96): undefined reference to `backlight_device_unregister'
This patch select BACKLIGHT_CLASS_DEVICE directly.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Chen Zhou <chenzhou10@huawei.com>
---
drivers/gpu/drm/i915/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig
index ba95959..6b69dab 100644
--- a/drivers/gpu/drm/i915/Kconfig
+++ b/drivers/gpu/drm/i915/Kconfig
@@ -16,7 +16,7 @@ config DRM_I915
select IRQ_WORK
# i915 depends on ACPI_VIDEO when ACPI is enabled
# but for select to work, need to select ACPI_VIDEO's dependencies, ick
- select BACKLIGHT_CLASS_DEVICE if ACPI
+ select BACKLIGHT_CLASS_DEVICE
select INPUT if ACPI
select ACPI_VIDEO if ACPI
select ACPI_BUTTON if ACPI
--
2.7.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH next] drm/i915: fix build error without ACPI
2020-01-13 13:27 [PATCH next] drm/i915: fix build error without ACPI Chen Zhou
@ 2020-01-13 13:57 ` Jani Nikula
0 siblings, 0 replies; 2+ messages in thread
From: Jani Nikula @ 2020-01-13 13:57 UTC (permalink / raw)
To: Chen Zhou, airlied, daniel; +Cc: dri-devel, linux-kernel, chenzhou10, intel-gfx
On Mon, 13 Jan 2020, Chen Zhou <chenzhou10@huawei.com> wrote:
> If CONFIG_ACPI=n and CONFIG_BACKLIGHT_CLASS_DEVICE=m, compilation complains
> with undefined references:
>
> drivers/gpu/drm/i915/display/intel_panel.o: In function `intel_backlight_device_register':
> intel_panel.c:(.text+0x4dd9): undefined reference to `backlight_device_register'
> drivers/gpu/drm/i915/display/intel_panel.o: In function `intel_backlight_device_unregister':
> intel_panel.c:(.text+0x4e96): undefined reference to `backlight_device_unregister'
>
> This patch select BACKLIGHT_CLASS_DEVICE directly.
i915 does not unconditionally require backlight.
See e.g. [1] for the details.
BR,
Jani.
[1] http://lore.kernel.org/r/87o8veotf9.fsf@intel.com
>
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Signed-off-by: Chen Zhou <chenzhou10@huawei.com>
> ---
> drivers/gpu/drm/i915/Kconfig | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig
> index ba95959..6b69dab 100644
> --- a/drivers/gpu/drm/i915/Kconfig
> +++ b/drivers/gpu/drm/i915/Kconfig
> @@ -16,7 +16,7 @@ config DRM_I915
> select IRQ_WORK
> # i915 depends on ACPI_VIDEO when ACPI is enabled
> # but for select to work, need to select ACPI_VIDEO's dependencies, ick
> - select BACKLIGHT_CLASS_DEVICE if ACPI
> + select BACKLIGHT_CLASS_DEVICE
> select INPUT if ACPI
> select ACPI_VIDEO if ACPI
> select ACPI_BUTTON if ACPI
--
Jani Nikula, Intel Open Source Graphics Center
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2020-01-13 13:57 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-01-13 13:27 [PATCH next] drm/i915: fix build error without ACPI Chen Zhou
2020-01-13 13:57 ` Jani Nikula
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).