From 2f08b23d70324bb0f592c71bd36cdc1d2f12face Mon Sep 17 00:00:00 2001 From: Mahesh Kumar Date: Fri, 25 May 2018 08:52:38 -0700 Subject: [PATCH] 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: c27e917e2bda ("drm/i915/icl: add basic support for the ICL clocks") Reviewed-by: Lucas De Marchi Signed-off-by: Mahesh Kumar Signed-off-by: Paulo Zanoni Link: https://patchwork.freedesktop.org/patch/msgid/20180525155238.7054-1-lucas.demarchi@intel.com (cherry picked from commit c46ef57d2008e5195f086a538550488b49644db7) Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/intel_ddi.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index b98ac0541f19..f4a8598a2d39 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -2453,12 +2453,13 @@ void icl_map_plls_to_ports(struct drm_crtc *crtc, for_each_new_connector_in_state(old_state, conn, conn_state, i) { struct intel_encoder *encoder = to_intel_encoder(conn_state->best_encoder); - enum port port = encoder->port; + enum port port; uint32_t val; if (conn_state->crtc != crtc) continue; + port = encoder->port; mutex_lock(&dev_priv->dpll_lock); val = I915_READ(DPCLKA_CFGCR0_ICL); @@ -2490,11 +2491,12 @@ void icl_unmap_plls_to_ports(struct drm_crtc *crtc, for_each_old_connector_in_state(old_state, conn, old_conn_state, i) { struct intel_encoder *encoder = to_intel_encoder(old_conn_state->best_encoder); - enum port port = encoder->port; + enum port port; if (old_conn_state->crtc != crtc) continue; + port = encoder->port; mutex_lock(&dev_priv->dpll_lock); I915_WRITE(DPCLKA_CFGCR0_ICL, I915_READ(DPCLKA_CFGCR0_ICL) | -- 2.30.2