The commit that brought it in was c8d1924. It looks like the right entries were there in pci_board_num_t, but the original implementer made all the two port cards show up as four ports. The four port cards show up as eight ports. If it is possible to backport then that would be much appreciated. The original commit message is below. Regards, --Jay serial: 8250: added acces i/o products quad and octal serial cards Added devices ids for acces i/o products quad and octal serial cards that make use of existing Pericom PI7C9X7954 and PI7C9X7958 configurations . On Fri, 8 Feb 2019, Greg KH wrote: > On Thu, Feb 07, 2019 at 08:17:43PM -0800, Jay Dolan wrote: > > Have the correct number of ports created for ACCES serial cards using > > Pericom chips. > > > > Signed-off-by: Jay Dolan <jay.dolan@xxxxxxxxxxx> > > So this has always been wrong? What commit caused this problem? Should > this be backported to older kernels? > > thanks, > > greg k-h > -- WARNING - This e-mail or its attachments may contain controlled technical data or controlled technology within the definition of the International Traffic in Arms Regulations (ITAR) or Export Administration Regulations (EAR), and are subject to the export control laws of the U.S. Government. Transfer of this data or technology by any means to a foreign person, whether in the United States or abroad, without an export license or other approval from the U.S. Government, is prohibited. The information contained in this document is CONFIDENTIAL and property of ACCES I/O Products, Inc. Any unauthorized review, use, disclosure or distribution is prohibited without express written consent of ACCES I/O Products, Inc. If you are not the intended recipient, please contact the sender and destroy all copies of the original message and enclosed attachments.