gpio-exar: Why filtering out Commtech devices?

[Jan Kiszka]

Hi Sudip,

why do we carry

        if (pcidev->vendor != PCI_VENDOR_ID_EXAR)
                return -ENODEV;

in gpio_exar_probe? This effectively prevents that

        EXAR_DEVICE(COMMTECH, COMMTECH_4222PCIE, pbn_exar_XR17V35x),
        EXAR_DEVICE(COMMTECH, COMMTECH_4224PCIE, pbn_exar_XR17V35x),
        EXAR_DEVICE(COMMTECH, COMMTECH_4228PCIE, pbn_exar_XR17V35x),

gain GPIO support. Do those devices lack access to the pins? Or can we
drop the filter. I don't have access to those devices, just wondering
because the code is not explaining the reason.

Jan

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Siemens AG, Corporate Technology, CT RDA ITP SES-DE
Corporate Competence Center Embedded Linux