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After commit 805f04d42a6b ("drm/i915/display/psr: Use continuos full
frame to handle frontbuffer invalidations") was merged we started to
get some drm_WARN_ON(&dev_priv->drm, !(tmp & PSR2_MAN_TRK_CTL_ENABLE))
in tests that are executed in pipe B.
This is probably due psr2_sel_fetch_cff_enabled being left set during
PSR disable in the pipe A, so the PSR2_MAN_TRK_CTL write in
intel_psr2_program_trans_man_trk_ctl() is skipped in pipe B and then
we get the warning when actually enabling PSR after planes programing.
We don't get such warnings when running tests in pipe A because
PSR2_MAN_TRK_CTL is only cleared when enabling PSR2 with hardware
tracking.
Was not able to reproduce this issue but cleaning the PSR state
disable will not harm anything at all.
Fixes: 805f04d42a6b ("drm/i915/display/psr: Use continuos full frame to handle frontbuffer invalidations")
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/5634
Cc: Jouni Högander <jouni.hogander@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220414151118.21980-2-jose.souza@intel.com
c837e02743