forked from Minki/linux
drm/i915/icl: fix icl_unmap/map_plls_to_ports
All connectors may not have best_encoder attached, so don't dereference
encoder pointer for each connector.
Fixes: c27e917e2b
("drm/i915/icl: add basic support for the ICL clocks")
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180525155238.7054-1-lucas.demarchi@intel.com
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@ -2444,12 +2444,13 @@ void icl_map_plls_to_ports(struct drm_crtc *crtc,
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for_each_new_connector_in_state(old_state, conn, conn_state, i) {
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for_each_new_connector_in_state(old_state, conn, conn_state, i) {
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struct intel_encoder *encoder =
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struct intel_encoder *encoder =
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to_intel_encoder(conn_state->best_encoder);
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to_intel_encoder(conn_state->best_encoder);
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enum port port = encoder->port;
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enum port port;
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uint32_t val;
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uint32_t val;
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if (conn_state->crtc != crtc)
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if (conn_state->crtc != crtc)
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continue;
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continue;
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port = encoder->port;
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mutex_lock(&dev_priv->dpll_lock);
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mutex_lock(&dev_priv->dpll_lock);
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val = I915_READ(DPCLKA_CFGCR0_ICL);
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val = I915_READ(DPCLKA_CFGCR0_ICL);
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@ -2481,11 +2482,12 @@ void icl_unmap_plls_to_ports(struct drm_crtc *crtc,
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for_each_old_connector_in_state(old_state, conn, old_conn_state, i) {
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for_each_old_connector_in_state(old_state, conn, old_conn_state, i) {
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struct intel_encoder *encoder =
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struct intel_encoder *encoder =
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to_intel_encoder(old_conn_state->best_encoder);
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to_intel_encoder(old_conn_state->best_encoder);
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enum port port = encoder->port;
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enum port port;
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if (old_conn_state->crtc != crtc)
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if (old_conn_state->crtc != crtc)
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continue;
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continue;
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port = encoder->port;
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mutex_lock(&dev_priv->dpll_lock);
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mutex_lock(&dev_priv->dpll_lock);
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I915_WRITE(DPCLKA_CFGCR0_ICL,
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I915_WRITE(DPCLKA_CFGCR0_ICL,
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I915_READ(DPCLKA_CFGCR0_ICL) |
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I915_READ(DPCLKA_CFGCR0_ICL) |
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