From 28ad0a90cfc35817fdff097a6a3ed73251c24800 Mon Sep 17 00:00:00 2001 From: Badhri Jagan Sridharan Date: Wed, 27 Jun 2018 21:37:27 -0700 Subject: [PATCH] usb gadget hal: Increase disconnect timeout MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 --- usb/UsbGadget.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/usb/UsbGadget.cpp b/usb/UsbGadget.cpp index 603afbba4..66ac85e5f 100644 --- a/usb/UsbGadget.cpp +++ b/usb/UsbGadget.cpp @@ -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/"