PCIe drivers fail to compile on Ubuntu 16.04

[CyanoKobalamyne]

When trying to compile pcieportal, I get the following error:

/home/ubuntu/src/connectal/drivers/pcieportal/portal.c: In function ‘pcieportal_ioctl’:
/home/ubuntu/src/connectal/drivers/pcieportal/portal.c:204:119: error: missing binary operator before token "("
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(5,0,0)) && !(defined(RHEL_MAJOR) && RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(8,0))
                                                                                                                       ^
/home/ubuntu/src/connectal/drivers/pcieportal/portal.c:207:69: error: macro "access_ok" requires 3 arguments, but only 2 given
                 err = !access_ok((void __user *) arg, _IOC_SIZE(cmd));
                                                                     ^
/home/ubuntu/src/connectal/drivers/pcieportal/portal.c:207:24: error: ‘access_ok’ undeclared (first use in this function)
                 err = !access_ok((void __user *) arg, _IOC_SIZE(cmd));
                        ^
/home/ubuntu/src/connectal/drivers/pcieportal/portal.c:207:24: note: each undeclared identifier is reported only once for each function it appears in
/home/ubuntu/src/connectal/drivers/pcieportal/portal.c:210:119: error: missing binary operator before token "("
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(5,0,0)) && !(defined(RHEL_MAJOR) && RHEL_RELEASE_CODE >= RHEL_RELEASE_VERSION(8,0))
                                                                                                                       ^
/home/ubuntu/src/connectal/drivers/pcieportal/portal.c:213:69: error: macro "access_ok" requires 3 arguments, but only 2 given
                 err = !access_ok((void __user *) arg, _IOC_SIZE(cmd));
                                                                     ^
/home/ubuntu/src/connectal/drivers/pcieportal/portal.c: In function ‘pcieportal_board_activate’:
/home/ubuntu/src/connectal/drivers/pcieportal/portal.c:548:39: error: implicit declaration of function ‘pci_irq_vector’ [-Werror=implicit-function-declaration]
                 this_board->irq_num = pci_irq_vector(this_board->pci_dev, 8);
                                       ^

Kernel version is the default 4.4.0. I also tried on 18.04, with a newer kernel (the default, I think 4.15), and that gave me the same error.

[CyanoKobalamyne]

The version from the repo seems to work on 18.04, but on 16.04 that also fails to install, although with a different error:

/var/lib/dkms/connectal/20.06.4/build/portal.c: In function ‘pcieportal_board_activate’:
/var/lib/dkms/connectal/20.06.4/build/portal.c:548:39: error: implicit declaration of function ‘pci_irq_vector’ [-Werror=implicit-function-declaration]
                 this_board->irq_num = pci_irq_vector(this_board->pci_dev, 8);
                                       ^

[manish-pp]

Do you have any idea how to resolve this error in ubuntu 16.04?

The version from the repo seems to work on 18.04, but on 16.04 that also fails to install, although with a different error:

/var/lib/dkms/connectal/20.06.4/build/portal.c: In function ‘pcieportal_board_activate’:
/var/lib/dkms/connectal/20.06.4/build/portal.c:548:39: error: implicit declaration of function ‘pci_irq_vector’ [-Werror=implicit-function-declaration]
                 this_board->irq_num = pci_irq_vector(this_board->pci_dev, 8);
                                       ^

[jameyhicks]

Hi Manish,

Ubuntu 16.04 is no longer getting security updates, so I recommend upgrading to the newest LTS that you can use.

Otherwise, the thing to do is look up pci_irq_vector in Linux cross reference and look at its history between 16.04 and 18.04.

Jamey