This fixes the auto-magic detection of LEDS_CLASS by fixing the case
where nouveau would be built-in and the LEDS_CLASS would be built as
as module.

Cc: <[email protected]> # 4.9.x-
Reported-by: Intel's 0-DAY
Signed-off-by: Martin Peres <[email protected]>
---
 drivers/gpu/drm/nouveau/Kbuild  | 2 +-
 drivers/gpu/drm/nouveau/Kconfig | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/Kbuild b/drivers/gpu/drm/nouveau/Kbuild
index fde6e36..0935396 100644
--- a/drivers/gpu/drm/nouveau/Kbuild
+++ b/drivers/gpu/drm/nouveau/Kbuild
@@ -22,7 +22,7 @@ nouveau-$(CONFIG_DEBUG_FS) += nouveau_debugfs.o
 nouveau-y += nouveau_drm.o
 nouveau-y += nouveau_hwmon.o
 nouveau-$(CONFIG_COMPAT) += nouveau_ioc32.o
-nouveau-$(CONFIG_LEDS_CLASS) += nouveau_led.o
+nouveau-$(CONFIG_DRM_NOUVEAU_LEDS) += nouveau_led.o
 nouveau-y += nouveau_nvif.o
 nouveau-$(CONFIG_NOUVEAU_PLATFORM_DRIVER) += nouveau_platform.o
 nouveau-y += nouveau_usif.o # userspace <-> nvif
diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig
index 2922a82..9dbb816 100644
--- a/drivers/gpu/drm/nouveau/Kconfig
+++ b/drivers/gpu/drm/nouveau/Kconfig
@@ -16,6 +16,7 @@ config DRM_NOUVEAU
        select INPUT if ACPI && X86
        select THERMAL if ACPI && X86
        select ACPI_VIDEO if ACPI && X86
+       select LEDS_CLASS if DRM_NOUVEAU_LEDS
        help
          Choose this option for open-source NVIDIA support.
 
@@ -62,3 +63,11 @@ config DRM_NOUVEAU_BACKLIGHT
        help
          Say Y here if you want to control the backlight of your display
          (e.g. a laptop panel).
+
+config DRM_NOUVEAU_LEDS
+       bool "Support for high-end GPUs' NVIDIA-logo LED control"
+       depends on DRM_NOUVEAU
+       default y
+       help
+         Say Y here if you want to control the LED behind the NVIDIA logo on
+         high-end GPUs.
-- 
2.10.2

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