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Date:      Fri, 3 Oct 2025 18:28:45 +0300
From:      Slawa Olhovchenkov <slw@zxy.spb.ru>
To:        freebsd-hackers@freebsd.org
Cc:        scottl@freebsd.org
Subject:   Multiple MSI-X interrupts for mpr
Message-ID:  <20251003152845.GA63732@zxy.spb.ru>
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Currently mpr driver don't allow to utilize multiple MSI-X interrupt.
Is possible to enable this by remove `msgs = min(msgs, 1);` line?

sys/dev/mpr/mpr_pci.c:

int
mpr_pci_alloc_interrupts(struct mpr_softc *sc)
{
        device_t dev;
        int error, msgs;

        dev = sc->mpr_dev;
        error = 0;
        msgs = 0;

        if (sc->disable_msix == 0) {
                msgs = pci_msix_count(dev);
                mpr_dprint(sc, MPR_INIT, "Counted %d MSI-X
                messages\n", msgs);
                msgs = min(msgs, sc->max_msix);
                msgs = min(msgs, MPR_MSIX_MAX);
                msgs = min(msgs, 1);    /* XXX */
                if (msgs != 0) {
                        mpr_dprint(sc, MPR_INIT, "Attempting to
                allocate %d "
                            "MSI-X messages\n", msgs);
                        error = mpr_alloc_msix(sc, msgs);
                }
        }
help

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