Andrew Donnellan [off-list ref] writes:
Developers working on AFUs and AFU drivers often find it useful to see the
pr_devel() and dev_dbg() messages from cxl. Give them an easy way to enable
-DDEBUG by adding a Kconfig option, CONFIG_CXL_DEBUG.
Another option is to use DYNAMIC_DEBUG. If you turn that on the
dev_dbg()'s can be enabled at runtime, and you could en masse or
selectively convert the pr_devel()s to pr_debug() to get the same
result.
cheers