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Commit 08ccc735 authored by Josh Gao's avatar Josh Gao
Browse files

adbd: reduce the USB buffer sizes to 16k. 

Some USB controllers only support 16k writes, so drop down to that.

Bug: http://b/130622010
Test: treehugger
Change-Id: I836d5b2d0d6fcae05f290af11a6a19c6e8d7c1ba
(cherry picked from commit 770a6a4d)
parent 6569f35a

adb/daemon/usb.cpp

+3 −2
Original line number Diff line number Diff line
@@ -57,11 +57,12 @@ using android::base::StringPrintf; 
// We can't find out whether we have support for AIO on ffs endpoints until we submit a read.

static std::optional<bool> gFfsAioSupported;



// Not all USB controllers support operations larger than 16k, so don't go above that.

static constexpr size_t kUsbReadQueueDepth = 32;

static constexpr size_t kUsbReadSize = 8 * PAGE_SIZE;

static constexpr size_t kUsbReadSize = 4 * PAGE_SIZE;



static constexpr size_t kUsbWriteQueueDepth = 32;

static constexpr size_t kUsbWriteSize = 8 * PAGE_SIZE;

static constexpr size_t kUsbWriteSize = 4 * PAGE_SIZE;



static const char* to_string(enum usb_functionfs_event_type type) {

    switch (type) {