commit c840653efd8d05a33778d3e73c3521977564bde3
author mgross <mark.gross@intel.com> Thu Jul 07 17:08:10 2011 -0700
committer Mark D Horn <mark.d.horn@intel.com> Mon Jan 23 13:12:23 2012 -0800
tree 1f55e4debeb2b9e0210f5c504946806762a93045
parent f60e8638282d66c108f1e1dea030856312f65892

fastboot: set the language local string

Set the language local string to 0x409 (English US / en-us) such that
fastboot will successfully read the usb descriptor serial number string.
The usbdevfs ioctl fails when the wIndex is not initialized with the
local for the unicode of the usb descriptor string.  usbdevfs is an
obsolete interface and fastboot probably needs a re-write to use libusb
like what is in adb.

Change-Id: I3687f84643f53c736f14b3ae7793185d9b5cccc0
Signed-off-by: Mark D Horn <mark.d.horn@intel.com>

fastboot/usb_linux.c

diff --git a/fastboot/usb_linux.c b/fastboot/usb_linux.c
index 1ba87e6..cbc64e4 100644
--- a/fastboot/usb_linux.c
+++ b/fastboot/usb_linux.c
@@ -139,10 +139,11 @@
         ctrl.bRequestType = USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE;
         ctrl.bRequest = USB_REQ_GET_DESCRIPTOR;
         ctrl.wValue = (USB_DT_STRING << 8) | dev->iSerialNumber;
-        ctrl.wIndex = 0;
+        //language ID (en-us) for serial number string
+        ctrl.wIndex = 0x0409;
         ctrl.wLength = sizeof(buffer);
         ctrl.data = buffer;
-	ctrl.timeout = 50;
+        ctrl.timeout = 50;
 
         result = ioctl(fd, USBDEVFS_CONTROL, &ctrl);
         if (result > 0) {