Ville Syrjälä 1787ec7dcc drm/i915: Skip wm/ddb readout for disabled pipes ...

commit 0211c2a0ea upstream.

The stuff programmed into the wm/ddb registers of planes
on disabled pipes doesn't matter. So during readout just
leave our software state tracking for those zeroed.

This should avoid us trying too hard to clean up after
whatever mess the VBIOS/GOP left in there. The actual
hardware state will get cleaned up if/when we enable
the pipe anyway.

Cc: stable@vger.kernel.org
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/5711
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220617195948.24007-1-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
(cherry picked from commit b183db8f47)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-09-08 12:28:08 +02:00

..

drm

drm/i915: Skip wm/ddb readout for disabled pipes

2022-09-08 12:28:08 +02:00

host1x

gpu: host1x: Fix a memory leak in 'host1x_remove()'

2022-04-08 14:23:36 +02:00

ipu-v3

gpu: ipu-v3: Fix dev_dbg frequency output

2022-04-20 09:34:16 +02:00

trace

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vga

vgaarb: don't pass a cookie to vga_client_register

2021-07-21 10:29:10 +02:00

Makefile

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