[sashal-linux-stable:queue-5.4 82/132] drivers/gpu/drm/i915/display/intel_ddi.c:3559:2: error: implicit declaration of function 'intel_ddi_power_up_lanes'

[sashal-linux-stable:queue-5.4 82/132] drivers/gpu/drm/i915/display/intel_ddi.c:3559:2: error: implicit declaration of function 'intel_ddi_power_up_lanes'

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git queue-5.4
head:   d2c5af89e80c5b71f1da59879464a930947306a2
commit: 6e9866706daac7dd4f69905954f8a662d7b173dd [82/132] drm/i915: Power up combo PHY lanes for for HDMI as well
config: x86_64-randconfig-a005-20210318 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 436c6c9c20cc522c92a923440a5fc509c342a7db)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/commit/?id=6e9866706daac7dd4f69905954f8a662d7b173dd
        git remote add sashal-linux-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git
        git fetch --no-tags sashal-linux-stable queue-5.4
        git checkout 6e9866706daac7dd4f69905954f8a662d7b173dd
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> drivers/gpu/drm/i915/display/intel_ddi.c:3559:2: error: implicit declaration of function 'intel_ddi_power_up_lanes' [-Werror,-Wimplicit-function-declaration]
           intel_ddi_power_up_lanes(encoder, crtc_state);
           ^
   1 error generated.


vim +/intel_ddi_power_up_lanes +3559 drivers/gpu/drm/i915/display/intel_ddi.c

  3508	
  3509	static void intel_enable_ddi_hdmi(struct intel_encoder *encoder,
  3510					  const struct intel_crtc_state *crtc_state,
  3511					  const struct drm_connector_state *conn_state)
  3512	{
  3513		struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
  3514		struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
  3515		struct drm_connector *connector = conn_state->connector;
  3516		enum port port = encoder->port;
  3517	
  3518		if (!intel_hdmi_handle_sink_scrambling(encoder, connector,
  3519						       crtc_state->hdmi_high_tmds_clock_ratio,
  3520						       crtc_state->hdmi_scrambling))
  3521			DRM_ERROR("[CONNECTOR:%d:%s] Failed to configure sink scrambling/TMDS bit clock ratio\n",
  3522				  connector->base.id, connector->name);
  3523	
  3524		/* Display WA #1143: skl,kbl,cfl */
  3525		if (IS_GEN9_BC(dev_priv)) {
  3526			/*
  3527			 * For some reason these chicken bits have been
  3528			 * stuffed into a transcoder register, event though
  3529			 * the bits affect a specific DDI port rather than
  3530			 * a specific transcoder.
  3531			 */
  3532			i915_reg_t reg = gen9_chicken_trans_reg_by_port(dev_priv, port);
  3533			u32 val;
  3534	
  3535			val = I915_READ(reg);
  3536	
  3537			if (port == PORT_E)
  3538				val |= DDIE_TRAINING_OVERRIDE_ENABLE |
  3539					DDIE_TRAINING_OVERRIDE_VALUE;
  3540			else
  3541				val |= DDI_TRAINING_OVERRIDE_ENABLE |
  3542					DDI_TRAINING_OVERRIDE_VALUE;
  3543	
  3544			I915_WRITE(reg, val);
  3545			POSTING_READ(reg);
  3546	
  3547			udelay(1);
  3548	
  3549			if (port == PORT_E)
  3550				val &= ~(DDIE_TRAINING_OVERRIDE_ENABLE |
  3551					 DDIE_TRAINING_OVERRIDE_VALUE);
  3552			else
  3553				val &= ~(DDI_TRAINING_OVERRIDE_ENABLE |
  3554					 DDI_TRAINING_OVERRIDE_VALUE);
  3555	
  3556			I915_WRITE(reg, val);
  3557		}
  3558	
> 3559		intel_ddi_power_up_lanes(encoder, crtc_state);
  3560	
  3561		/* In HDMI/DVI mode, the port width, and swing/emphasis values
  3562		 * are ignored so nothing special needs to be done besides
  3563		 * enabling the port.
  3564		 */
  3565		I915_WRITE(DDI_BUF_CTL(port),
  3566			   dig_port->saved_port_bits | DDI_BUF_CTL_ENABLE);
  3567	
  3568		if (crtc_state->has_audio)
  3569			intel_audio_codec_enable(encoder, crtc_state, conn_state);
  3570	}
  3571	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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