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