Re: Removing a misleading warning message?

[Alison Schofield <alison.schofield@intel.com>]

+ linux-cxl mailing list

On Fri, Oct 11, 2024 at 05:58:52PM +0800, Coly Li wrote:
> Hi list,
> 
> Recently I have a report for a warning message from CXL subsystem,
> [ 48.142342] cxl_port port2: Couldn't locate the CXL.cache and CXL.mem capability array header.
> [ 48.144690] cxl_port port3: Couldn't locate the CXL.cache and CXL.mem capability array header.
> [ 48.144704] cxl_port port3: HDM decoder capability not found
> [ 48.144850] cxl_port port4: Couldn't locate the CXL.cache and CXL.mem capability array header.
> [ 48.144859] cxl_port port4: HDM decoder capability not found
> [ 48.170374] cxl_port port6: Couldn't locate the CXL.cache and CXL.mem capability array header.
> [ 48.172893] cxl_port port7: Couldn't locate the CXL.cache and CXL.mem capability array header.
> [ 48.174689] cxl_port port7: HDM decoder capability not found
> [ 48.175091] cxl_port port8: Couldn't locate the CXL.cache and CXL.mem capability array header.
> [ 48.175105] cxl_port port8: HDM decoder capability not found
> 
> After checking the source code I realize this is not a real bug, just a warning message that expected device was not detected.
> But from the above warning information itself, users/customers are worried there is something wrong (IMHO indeed not).
> 
> Is there any chance that we can improve the code logic that only printing out the warning message when it is really a problem to be noticed? 
> 
> Thanks in advance.
> 
> Coly Li