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From 58b01e01875e2f6ae593ded197430bc23713dd0a Mon Sep 17 00:00:00 2001
From: Ingo Rohloff <lundril@gmx.de>
Date: Fri, 16 May 2014 21:51:41 +0200
Subject: [PATCH] ADB on linux: Handle USB SuperSpeed extra Descriptors
Under Linux, ADB manually parses USB Descriptors to check for
possible ADB USB Interfaces. USB Devices connected with SuperSpeed
will exhibit extra USB SuperSpeed Endpoint Companion Descriptors.
This patch handles these USB SuperSpeed specific USB Descriptors.
Change-Id: Icd1e5fdde0b324c7df4f933583499f2c52a922f3
Signed-off-by: Ingo Rohloff <lundril@gmx.de>
---
adb/usb_linux.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
--- a/adb/usb_linux.c
+++ b/adb/usb_linux.c
@@ -238,8 +238,20 @@ static void find_usb_device(const char *
// looks like ADB...
ep1 = (struct usb_endpoint_descriptor *)bufptr;
bufptr += USB_DT_ENDPOINT_SIZE;
+ // For USB 3.0 SuperSpeed devices, skip potential
+ // USB 3.0 SuperSpeed Endpoint Companion descriptor
+ if (bufptr+2 <= devdesc + desclength &&
+ bufptr[0] == USB_DT_SS_EP_COMP_SIZE &&
+ bufptr[1] == USB_DT_SS_ENDPOINT_COMP) {
+ bufptr += USB_DT_SS_EP_COMP_SIZE;
+ }
ep2 = (struct usb_endpoint_descriptor *)bufptr;
bufptr += USB_DT_ENDPOINT_SIZE;
+ if (bufptr+2 <= devdesc + desclength &&
+ bufptr[0] == USB_DT_SS_EP_COMP_SIZE &&
+ bufptr[1] == USB_DT_SS_ENDPOINT_COMP) {
+ bufptr += USB_DT_SS_EP_COMP_SIZE;
+ }
if (bufptr > devdesc + desclength ||
ep1->bLength != USB_DT_ENDPOINT_SIZE ||
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