linux-kernel - [PATCH v2] USB: announce bcdDevice as well as idVendor, idProduct.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 23 Mar 2018 18:31:54 -0700
From:   Benson Leung <bleung@...omium.org>
To:     gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     achant@...gle.com, bleung@...gle.com,
        Benson Leung <bleung@...omium.org>
Subject: [PATCH v2] 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@...omium.org>
--
v2: Format for decimal output.
---
 drivers/usb/core/hub.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index aaeef03c0d83..624cde7ffcea 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2192,14 +2192,19 @@ 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",
-		le16_to_cpu(udev->descriptor.idVendor),
-		le16_to_cpu(udev->descriptor.idProduct));
+	u16 bcdDevice;
+
+	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),
+		 bcdDevice >> 8, bcdDevice & 0xff);
 	dev_info(&udev->dev,
-		"New USB device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
-		udev->descriptor.iManufacturer,
-		udev->descriptor.iProduct,
-		udev->descriptor.iSerialNumber);
+		 "New USB device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
+		 udev->descriptor.iManufacturer,
+		 udev->descriptor.iProduct,
+		 udev->descriptor.iSerialNumber);
 	show_string(udev, "Product", udev->product);
 	show_string(udev, "Manufacturer", udev->manufacturer);
 	show_string(udev, "SerialNumber", udev->serial);
-- 
2.17.0.rc0.231.g781580f067-goog