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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>
This commit is contained in:
Ingo Rohloff 2014-05-16 21:51:41 +02:00
parent 8b2d46a5fc
commit 58b01e0187
1 changed files with 12 additions and 0 deletions
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12
adb/usb_linux.c
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@ -237,8 +237,20 @@ static void find_usb_device(const char *base,
// 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 ||