Don't prepare outputs & crtcs if set_mode_major is present
A driver with this hook will take care of preparing the outputs & crtcs,
so calling the prepare functions will just cause unnecessary flicker.
Fixes bug #21077
(cherry picked from commit 94648bb797
)
Signed-off-by: Keith Packard <keithp@keithp.com>
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eac2b3658a
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@ -2444,18 +2444,23 @@ _X_EXPORT Bool
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xf86SetDesiredModes (ScrnInfoPtr scrn)
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{
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xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(scrn);
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xf86CrtcPtr crtc = config->crtc[0];
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int c;
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xf86PrepareOutputs(scrn);
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xf86PrepareCrtcs(scrn);
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/* A driver with this hook will take care of this */
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if (!crtc->funcs->set_mode_major) {
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xf86PrepareOutputs(scrn);
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xf86PrepareCrtcs(scrn);
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}
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for (c = 0; c < config->num_crtc; c++)
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{
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xf86CrtcPtr crtc = config->crtc[c];
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xf86OutputPtr output = NULL;
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int o;
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RRTransformPtr transform;
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crtc = config->crtc[c];
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/* Skip disabled CRTCs */
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if (!crtc->enabled)
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continue;
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