PCIe DMA Driver for Linux

0
votes

I am currently working on a Virtex 7 FPGA . I am trying to install the driver for the PCIe DMA driver for linux . But it is giving me the following error :

error: implicit declaration of function ‘pci_enable_msix’ [-Werror=implicit-function-declaration]

Can someone help me with this error ?

2
linuxlinux-kernellinux-device-driverfpga
Please post the text of the error rather than an image. Your post is unusable by those users with mobile devices or behind many corporate proxies. It's also difficult to read even on a typical laptop display.. – Ken White
error: implicit declaration of function ‘pci_enable_msix’ . This is the error I receive. – Sushrut Kaul
The entire error message, in the question itself instead of the image. Posting it in a comment does absolutely nothing to address the issues I described. – Ken White

2 Answers

2
votes

Linux 4.8 replaced it with pci_enable_msix_range. You can fix it like this:

#if LINUX_VERSION_CODE < KERNEL_VERSION(4,8,0)
        rc = pci_enable_msix(pdev, lro->entry, req_nvec);
#else
        rc = pci_enable_msix_range(pdev, lro->entry, req_nvec, req_nvec);
#endif
0
votes

Linux cross reference is a very good resource for this kind of problem, because you can explore the change in API over kernel version.