The answer is it certainly should be and almost certainly will be compatible, including with the QCA/Atheros cards. Everything should be playing to the standards.
What steps did you take to conclude that the issues you are observing are chipset or driver related? Could you elaborate a little on what they are?
There are many factors that can cause connectivity issues with wireless, typically they are not chipset or driver related.
Did you try updating the drivers to the latest available, and what is the version you are using according to Device Manager (assuming Windows, of course)?
http://www.atheros.cz/ is a great place to get the latest that are available, certainly for testing purposes for QCA/Atheros. Laptop vendors such as HP usually ship with older drivers and poorly maintain their support sites so newer versions are never or infrequently made available.
An important thing to consider is the capabilities of the QCA/Atheros chipset you have in your HP laptops, could you tell us what it is?