[PATCH 0/3] drm/panic: Remove build time dependency with FRAMEBUFFER_CONSOLE

[Jocelyn Falempe]

When proposing to enable DRM_PANIC on Fedora, some users raised concern about the need to disable VT_CONSOLE.
So this is my new attempt to avoid fbcon/vt_console to overwrite the panic screen.
This time it doesn't involve any locking, so it should be safe.
I added a skip_panic option in struct fb_info, and check if this option and the panic_cpu are set in fb_is_inactive(), to prevent any framebuffer operation.
Also skip_panic is only true if the drm driver supports drm_panic, so you will still get the VT panic info on drivers that don't have drm_panic support yet.

Jocelyn Falempe (3):
  drm/panic: Add drm_panic_is_enabled()
  fbcon: Add an option to disable fbcon in panic.
  drm/panic: Remove build time dependency with FRAMEBUFFER_CONSOLE

 drivers/gpu/drm/Kconfig          |  2 +-
 drivers/gpu/drm/drm_fb_helper.c  |  2 ++
 drivers/gpu/drm/drm_panic.c      | 20 ++++++++++++++++++++
 drivers/video/fbdev/core/fbcon.c |  7 ++++++-
 include/drm/drm_panic.h          |  2 ++
 include/linux/fb.h               |  1 +
 6 files changed, 32 insertions(+), 2 deletions(-)


base-commit: a237f217bad50c381773da5b00442710d1449098
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2.45.2