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fbcon: Remove fb_debug_enter/_leave from struct fb_ops

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There are no implementations of fb_debug_enter and fb_debug_leave.
Remove the callbacks from struct fb_ops and clean up the caller.

The field save_graphics in fbcon_par is also no longer required.
Remove it as well.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Simona Vetter <simona.vetter@ffwll.ch>
Acked-by: Daniel Thompson (RISCstar) <danielt@kernel.org>
Link: https://patch.msgid.link/20251125130634.1080966-6-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann
2025-11-25 13:52:17 +01:00
parent 6ea3aacc8e
commit 7068d42048
4 changed files with 0 additions and 57 deletions
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28
Documentation/process/debugging/kgdb.rst
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@@ -889,34 +889,6 @@ in the virtual console layer. On resuming kernel execution, the kernel
debugger calls kgdboc_post_exp_handler() which in turn calls
con_debug_leave().
Any video driver that wants to be compatible with the kernel debugger
and the atomic kms callbacks must implement the ``mode_set_base_atomic``,
``fb_debug_enter`` and ``fb_debug_leave operations``. For the
``fb_debug_enter`` and ``fb_debug_leave`` the option exists to use the
generic drm fb helper functions or implement something custom for the
hardware. The following example shows the initialization of the
.mode_set_base_atomic operation in
drivers/gpu/drm/i915/intel_display.c::
static const struct drm_crtc_helper_funcs intel_helper_funcs = {
[...]
.mode_set_base_atomic = intel_pipe_set_base_atomic,
[...]
};
Here is an example of how the i915 driver initializes the
fb_debug_enter and fb_debug_leave functions to use the generic drm
helpers in ``drivers/gpu/drm/i915/intel_fb.c``::
static struct fb_ops intelfb_ops = {
[...]
.fb_debug_enter = drm_fb_helper_debug_enter,
.fb_debug_leave = drm_fb_helper_debug_leave,
[...]
};
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