Daniel Vetter fc8fd40eb2 drm: Rip out totally bogus vga_switcheroo->can_switch locking ... So I just wanted to add a new field to struct drm_device and accidentally stumbled over something. According to comments dev->open_count is protected by dev->count_lock, but that's totally not the case. It's protected by drm_global_mutex. Unfortunately the vga switcheroo callbacks took this comment at face value. The problem is that we can't just take the drm_global_mutex because: - It would lead to a locking inversion with the driver load/unload paths. - It wouldn't actually protect anything, for that we'd need to wrap the entire vga switcheroo code in the drm_global_mutex. And I'm not sure whether that would actually solve anything. What we probably want is a try_to_grab_switcheroo reference kind of thing which is used in the driver's ->open callback. Then we could move all that ->can_switch madness into the vga switcheroo core where it really belongs. But since that would amount to real work take the easy way out and just add a comment. It's definitely not going to make anything worse since doing switcheroo state changes while restarting X just isn't recommended. Even though the delayed switching code does exactly that. v2: - Simplify the ->can_switch implementations more (Thierry) - Fix comment about the dev->open_count locking (Thierry) Cc: Thierry Reding <treding@nvidia.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> (v1) Reviewed-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>		2014-04-23 10:32:33 +02:00
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core	drm/nouveau/bios: fix a bit shift error introduced by 457e77b	2014-04-18 13:15:18 +10:00
dispnv04
Kconfig
Makefile
nouveau_abi16.c
nouveau_abi16.h
nouveau_acpi.c
nouveau_acpi.h
nouveau_agp.c
nouveau_agp.h
nouveau_backlight.c
nouveau_bios.c
nouveau_bios.h
nouveau_bo.c
nouveau_bo.h
nouveau_chan.c
nouveau_chan.h
nouveau_connector.c
nouveau_connector.h
nouveau_crtc.h
nouveau_debugfs.c
nouveau_debugfs.h
nouveau_display.c
nouveau_display.h
nouveau_dma.c
nouveau_dma.h
nouveau_dp.c
nouveau_drm.c
nouveau_drm.h
nouveau_encoder.h
nouveau_fbcon.c
nouveau_fbcon.h
nouveau_fence.c
nouveau_fence.h
nouveau_gem.c
nouveau_gem.h
nouveau_hwmon.c
nouveau_hwmon.h
nouveau_ioc32.c
nouveau_ioctl.h
nouveau_prime.c
nouveau_reg.h
nouveau_sgdma.c
nouveau_sysfs.c
nouveau_sysfs.h
nouveau_ttm.c
nouveau_ttm.h
nouveau_vga.c	drm: Rip out totally bogus vga_switcheroo->can_switch locking	2014-04-23 10:32:33 +02:00
nouveau_vga.h
nv04_fbcon.c
nv04_fence.c
nv10_fence.c
nv10_fence.h
nv17_fence.c
nv50_display.c
nv50_display.h
nv50_fbcon.c
nv50_fence.c
nv84_fence.c
nvc0_fbcon.c
nvc0_fence.c