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ACPI: video: Remove register_backlight_delay module option and code

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Since commit 5aa9d943e9 ("ACPI: video: Don't enable fallback path for
creating ACPI backlight by default"), the delayed registering of
acpi_video# backlight devices has been disabled by default.

The few bugreports where this option was used as a workaround were all
cases where the GPU driver did not call acpi_video_register_backlight()
and the workaround was to pass video.register_backlight_delay=1.

With the recent "ACPI: video: Make acpi_backlight=video work independent
from GPU driver" changes acpi_backlight=video can be used to achieve
the same result. So there is no need for the register_backlight_delay
option + code anymore.

Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Hans de Goede
2023-04-04 13:02:50 +02:00
committed by Rafael J. Wysocki
parent 09a9639e56
commit 67abe9c6a8
3 changed files with 0 additions and 44 deletions
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4
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -4445,10 +4445,6 @@ static int amdgpu_dm_initialize_drm_device(struct amdgpu_device *adev)
amdgpu_set_panel_orientation(&aconnector->base);
}
/* If we didn't find a panel, notify the acpi video detection */
if (dm->adev->flags & AMD_IS_APU && dm->num_of_edps == 0)
acpi_video_report_nolcd();
/* Software is initialized. Now we can register interrupt handlers. */
switch (adev->asic_type) {
#if defined(CONFIG_DRM_AMD_DC_SI)