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USB: announce bcdDevice as well as idVendor, idProduct. 

Print bcdDevice which is used by vendors to identify different versions
of the same product (or different versions of firmware).

Adding this to the logs will be useful for support purposes.

Match the %2x.%02x formatting that's used by lsusb -v for this same value.

Signed-off-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Benson Leung 2018-03-24 10:40:27 -07:00 committed by Greg Kroah-Hartman
parent 64627388b5
commit 73c6d3b284
1 changed files with 6 additions and 2 deletions
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8
drivers/usb/core/hub.c
View File

@ -2192,9 +2192,13 @@ static void show_string(struct usb_device *udev, char *id, char *string)
static void announce_device(struct usb_device *udev)
{
dev_info(&udev->dev, "New USB device found, idVendor=%04x, idProduct=%04x\n",
u16 bcdDevice = le16_to_cpu(udev->descriptor.bcdDevice);
dev_info(&udev->dev,
"New USB device found, idVendor=%04x, idProduct=%04x, bcdDevice=%2x.%02x\n",
le16_to_cpu(udev->descriptor.idVendor),
le16_to_cpu(udev->descriptor.idProduct));
le16_to_cpu(udev->descriptor.idProduct),
bcdDevice >> 8, bcdDevice & 0xff);
dev_info(&udev->dev,
"New USB device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
udev->descriptor.iManufacturer,