PCI: Generate uppercase hex for modalias interface class

commit 89ec3dcf17fd3fa009ecf8faaba36828dd6bc416 upstream.

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.

[bhelgaas: changelog]
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Zefan Li <lizefan@huawei.com>

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index a55e248618cd00e7de495a078c3bb59d177123f4..985ada79191e939736899a21639d6c07016cf61b 100644 (file)
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -173,7 +173,7 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
 {
        struct pci_dev *pci_dev = to_pci_dev(dev);
 
-       return sprintf(buf, "pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x\n",
+       return sprintf(buf, "pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02X\n",
                       pci_dev->vendor, pci_dev->device,
                       pci_dev->subsystem_vendor, pci_dev->subsystem_device,
                       (u8)(pci_dev->class >> 16), (u8)(pci_dev->class >> 8),