** Patch added: "0001-UBUNTU-Config-snapdragon-DRM_I2C_ADV7511-y.patch"
   
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1768761/+attachment/5132846/+files/0001-UBUNTU-Config-snapdragon-DRM_I2C_ADV7511-y.patch

** Description changed:

  IMPACT:
  
  During boot, after the rootfs is mounted, the linux-snapdragon kernel
  prints several lines like these:
  
  ...
  [    5.258027] qcom-apq8016-sbc 7702000.sound: error getting codec dai name
  [    5.258052] qcom-apq8016-sbc 7702000.sound: Error resolving dai links: -517
  [    5.274320] msm_dsi_manager_register: failed to register mipi dsi host for 
DSI 0
  [    5.274451] msm 1a00000.mdss: failed to bind 1a98000.dsi (ops dsi_ops): 
-517
  [    5.300115] qcom-apq8016-sbc 7702000.sound: error getting codec dai name
  [    5.300140] qcom-apq8016-sbc 7702000.sound: Error resolving dai links: -517
  [    5.733725] msm_dsi_manager_register: failed to register mipi dsi host for 
DSI 0
  [    5.733841] msm 1a00000.mdss: failed to bind 1a98000.dsi (ops dsi_ops): 
-517
  [    5.760228] qcom-apq8016-sbc 7702000.sound: error getting codec dai name
  [    5.760252] qcom-apq8016-sbc 7702000.sound: Error resolving dai links: -517
  [    6.146074] msm_dsi_manager_register: failed to register mipi dsi host for 
DSI 0
  ...
  
  these are the audio and drm modules failing to attach due to the adv7511
  i2c bridge missing - they will retry several times, until the
- adv7511_drm is finally loaded and these messages will disappear.
+ adv7511_drm is finally loaded and these messages disappear.
  
  While both audio and video work fine in the end, these lines make
  parsing the boot logs harder and might fool a user to think there's a
  potential problem.
  
  FIX:
  
  To fix it, make the config DRM_I2C_ADV7511=y.
  
  HOW TO REPRODUCE:
  
  Boot a patched kernel and check the boot logs.
  
  REGRESSION POTENTIAL:
  
  Probably none.

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https://bugs.launchpad.net/bugs/1768761

Title:
  linux-snapdragon: reduce EPROBEDEFER noise during boot

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