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authorBjorn Helgaas <bjorn.helgaas@hp.com>2009-09-21 13:35:14 -0600
committerLen Brown <len.brown@intel.com>2009-09-25 14:26:02 -0400
commitb1fbfb2ae8f2f0e04219218da6f52f7313466899 (patch)
treef038ea487be82ccd96c21f143cdded80b0e52c12 /drivers/pnp
parentea8d82fd316208bd0ffe6f64823d04bcb8c57158 (diff)
downloadlinux-b1fbfb2ae8f2f0e04219218da6f52f7313466899.tar.gz
ACPI: make sure every acpi_device has an ID
This makes sure every acpi_device has at least one ID.  If we build an
acpi_device for a namespace node with no _HID or _CID, we sometimes
synthesize an ID like "LNXCPU" or "LNXVIDEO".  If we don't even have
that, give it a default "device" ID.

Note that this means things like:
    /sys/devices/LNXSYSTM:00/LNXSYBUS:00/HWP0001:00/HWP0002:04/device:00
(a PCI slot SxFy device) will have "hid" and "modprobe" entries, where
they didn't before.  These aren't very useful (a HID of "device" doesn't
tell you what *kind* of device it is, so it doesn't help find a driver),
but I don't think they're harmful.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/pnp')
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