drm/radeon: Don't register Thunderbolt eGPU with vga_switcheroo

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An external Thunderbolt GPU can neither drive the laptop's panel nor be
powered off by the platform, so there's no point in registering it with
vga_switcheroo.  In fact, when the external GPU is runtime suspended,
vga_switcheroo will cut power to the internal discrete GPU, resulting in
a lockup.  Moreover AMD's Windows driver special-cases Thunderbolt as
well.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: http://patchwork.freedesktop.org/patch/msgid/72d8a9645aece3eff44e116303f0fec8be061c88.1489145162.git.lukas@wunner.de

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This commit is contained in:

Lukas Wunner 2017-03-10 21:23:45 +01:00

parent 8531e283be

commit 7ffb0ce31c

2 changed files with 7 additions and 3 deletions

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7

drivers/gpu/drm/radeon/radeon_device.c

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3

drivers/gpu/drm/radeon/radeon_kms.c

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