From 4472fdb4d010885c322ab85bdf9d24bd1469489c Mon Sep 17 00:00:00 2001
From: Hridya Valsaraju <hridya@google.com>
Date: Tue, 21 May 2019 13:03:24 -0700
Subject: [PATCH] fastbootd: reduce USB buffer size to 16K

Some USB controllers can only support transfers upto 16K.

Bug: 133208811
Test: fastboot flashall
Change-Id: Ic025bdd8e7a6cf2634fc24524fd189e0cc9efbb5
Merged-In: Ic025bdd8e7a6cf2634fc24524fd189e0cc9efbb5
(cherry picked from commit d747dba9c0fd5bb81e4b616cfb562a10c64b9e54)
---
 fastboot/device/usb_client.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fastboot/device/usb_client.cpp b/fastboot/device/usb_client.cpp
index fb51a900b..775d10c80 100644
--- a/fastboot/device/usb_client.cpp
+++ b/fastboot/device/usb_client.cpp
@@ -33,7 +33,7 @@ constexpr int kMaxPacketSizeHs = 512;
 constexpr int kMaxPacketsizeSs = 1024;
 
 constexpr size_t kFbFfsNumBufs = 16;
-constexpr size_t kFbFfsBufSize = 32768;
+constexpr size_t kFbFfsBufSize = 16384;
 
 constexpr const char* kUsbFfsFastbootEp0 = "/dev/usb-ffs/fastboot/ep0";
 constexpr const char* kUsbFfsFastbootOut = "/dev/usb-ffs/fastboot/ep1";