We can simplify the test steps as:

$ sudo fwts s3 --s3-multiple=1 --s3-min-delay=15 --s3-sleep-delay=15 -f -r 
mylog-1.log
$ sudo -E cameraDebug=3 gst-launch-1.0 icamerasrc ! videoconvert ! avimux ! 
filesink location=out.avi
(blocked)

$ sudo dmesg
[  482.554332] usbio-bridge 3-3:1.0: Read Bulk transfer timed out: 81
[  482.642528] usbio-bridge 3-3:1.0: Write Bulk transfer failed: -110
[  482.642539] ov05c10 i2c-OVTI05C1:00: Error reading reg 0x0035: -110
[  482.818349] usbio-bridge 3-3:1.0: Write Bulk transfer failed: -110
[  482.818377] ov05c10 i2c-OVTI05C1:00: Error reading reg 0x0035: -110
[  482.914502] usbio-bridge 3-3:1.0: Write Bulk transfer failed: -110
[  482.914541] ov05c10 i2c-OVTI05C1:00: Error writing reg 0x00fd: -110
[  482.914558] ov05c10 i2c-OVTI05C1:00: failed to set mode
[  482.914586] intel_ipu7_isys.isys intel_ipu7.isys.40: enable streams Intel 
IPU7 CSI2 0 failed with -110
[  484.978398] intel_ipu7_isys.isys intel_ipu7.isys.40: stream stop time out

$ sudo fwts s3 --s3-multiple=1 --s3-min-delay=15 --s3-sleep-delay=15 -f -r 
mylog-2.log
......
  Sleep suspend/resume test. 5 passed, 3 failed
$ sudo dmesg
[  953.632378] fwts: Starting fwts suspend                                      
                                                                                
       
[  953.632393] fwts: Suspend                                                    
                                                                                
       
[  954.928184] PM: suspend entry (s2idle)                                       
                                                                                
       
[  954.938203] Filesystems sync: 0.010 seconds                                  
                                                                                
       
[  955.157784] Freezing user space processes                                    
                                                                                
       
[  955.159179] Freezing user space processes completed (elapsed 0.001 seconds)  
                                                                                
       
[  955.159183] OOM killer disabled.                                             
                                                                                
       
[  955.159184] Freezing remaining freezable tasks                               
                                                                                
       
[  955.160172] Freezing remaining freezable tasks completed (elapsed 0.000 
seconds)                                                                        
            
[  955.160175] printk: Suspending console(s) (use no_console_suspend to debug)  
                                                                                
       
[  955.313729] GFP mask restricted                                              
                                                                                
       
[  955.314395] Intel CVS driver i2c-INTC10DE:00: cvs_suspend:entered            
                                                                                
       
[  955.314406] Intel CVS driver i2c-INTC10DE:00: cvs_suspend:wait for fw update 
cancel                                                                          
       
[  955.314410] Intel CVS driver i2c-INTC10DE:00: cvs_suspend:fw update 
cancelled                                                                       
                
[  955.314416] Intel CVS driver i2c-INTC10DE:00: cvs_suspend:completed          
                                                                                
       
[  955.337332] intel_ipu7_isys.isys intel_ipu7.isys.40: PM: dpm_run_callback(): 
isys_suspend [intel_ipu7_isys] returns -16                                      
       
[  955.337355] intel_ipu7_isys.isys intel_ipu7.isys.40: PM: failed to suspend: 
error -16
[  955.351326] PM: suspend of devices aborted after 37.588 msecs
[  955.351333] PM: start suspend of devices aborted after 191.122 msecs
[  955.351338] PM: Some devices failed to suspend, or early wake event detected
[  955.352676] Intel CVS driver i2c-INTC10DE:00: cvs_resume entered
[  955.353156] Intel CVS driver i2c-INTC10DE:00: cvs_resume:completed
[  955.477271] PM: resume of devices complete after 125.918 msecs
[  955.477725] GFP mask restored
[  955.518801] OOM killer enabled.
[  955.518805] Restarting tasks: Starting
[  955.520858] Restarting tasks: Done
[  955.520891] random: crng reseeded on system resumption
[  955.578930] PM: suspend exit

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https://bugs.launchpad.net/bugs/2158228

Title:
  System failed to enter suspend due to intel_ipu7_isys returning -16

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