Created attachment 303649 [details]
dmesg

On a Dell XPS-13 9310, suspend occasionally fails because ath11k
returns an error while suspending.  This error return signals
the PM sub-system that the entire system suspend should be aborted.

Unless data would be lost or hardware damaged by continuing
with the suspend, ath11k should NOT be returning this error
and should NOT be aborting system suspend.

In this example, the ath11k failure was transient, the device
subsequently operated normally, and subsequent suspend/resume
cycles worked fine.

However, the damage was already done.
If the suspend were triggered by somebody closing their lid
and placing their laptop into a bag, the ath11k bug would cause
the system to be running while sealed in a briefcase...