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Date:      Fri, 01 Nov 2019 22:00:55 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 241651] linuxkpi doesn't handle uninitialized PCI devices
Message-ID:  <bug-241651-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D241651

            Bug ID: 241651
           Summary: linuxkpi doesn't handle uninitialized PCI devices
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: jhibbits@FreeBSD.org

The linuxkpi assumes that PCI devices are already fully configured.  Howeve=
r,
sometimes video cards are not configured by firmware and need to be initial=
ized
instead by FreeBSD.

Linux KPI uses the PCI device resource lists directly, which can fail when a
device is not initialized.

According to jhb@, this should be done instead by using pci_find_bar(), and
other PCI API functions, in linux_pci_get_bar() instead of trolling through=
 the
resource list directly, so that the BARs get properly initialized.

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