On Tue, Dec 02, 2014 at 05:35:04PM +0100, Ricardo Ribalda Delgado wrote:
> Some implementations of modprobe fail to load the driver for a PCI device
> automatically because the "interface" part of the modalias from the kernel
> is lowercase, and the modalias from file2alias is uppercase.
>
> The "interface" is the low-order byte of the Class Code, defined in PCI
> r3.0, Appendix D. Most interface types defined in the spec do not use
> alpha characters, so they won't be affected. For example, 00h, 01h, 10h,
> 20h, etc. are unaffected.
>
> Print the "interface" byte of the Class Code in uppercase hex, as we
> already do for the Vendor ID, Device ID, Class, etc.
>
> Commit 89ec3dcf17fd ("PCI: Generate uppercase hex for modalias
> interface class") fixed only half of the problem. Some udev
> implementations relays on the uevent file and not in the modalias file.
>
> CC: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
> CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Fixes: d1ded203adf1 ("PCI: add MODALIAS to hotplug event for pci devices")
> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@xxxxxxxxx>
> ---
>
> Modified line is >80 char, but I believe that it is better than breaking
> the string or indent it bad.
Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
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