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usb gadget hal: Increase disconnect timeout

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Increase disconnect timeout from 10ms to 100ms for the host ports which
dont strictly adhere to the spec to sense disconnect.

This is a work around given that some of the root ports dont detect
it. From the USB 2.0 spec guidelines, the disconnect should be
detected in 2.5us.

From the USB 2.0 spec (pg 186)
Time to detect a disconnect event
at a hub’s downstream facing port
TDDIS Section 7.1.7.3 2 2.5 µs


Bug: 110412433
Test: Walleye entering accessory mode in USB 3.0 with IOGear cable
and USB 3.0 host.

Change-Id: I8d8f62dc1a7bcbc9c7727c51cad7f3cb07ba6b50
(cherry picked from commit 28ad0a90cf)
This commit is contained in:
Badhri Jagan Sridharan
2018-06-27 21:37:27 -07:00
committed by android-build-team Robot
parent 4632dabb4e
commit a063ae4f55
1 changed files with 1 additions and 1 deletions
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2
usb/UsbGadget.cpp
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@@ -30,7 +30,7 @@ constexpr int BUFFER_SIZE = 512;
constexpr int MAX_FILE_PATH_LENGTH = 256;
constexpr int EPOLL_EVENTS = 10;
constexpr bool DEBUG = false;
constexpr int DISCONNECT_WAIT_US = 10000;
constexpr int DISCONNECT_WAIT_US = 100000;
#define BUILD_TYPE "ro.build.type"
#define GADGET_PATH "/config/usb_gadget/g1/"