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| author | Josh Gao <jmgao@google.com> | 2019-04-16 11:20:04 -0700 |
|---|---|---|
| committer | Josh Gao <jmgao@google.com> | 2019-04-17 17:53:34 -0700 |
| commit | 08ccc735a386bdfb410538c714ec7871fda21537 (patch) | |
| tree | 940299b975cf1a8111bcc8ca551f8c6a40bae433 /adb | |
| parent | 6569f35ae08b5de4323ae52be47f73e4ecb58ae1 (diff) | |
| download | system_core-08ccc735a386bdfb410538c714ec7871fda21537.tar.gz system_core-08ccc735a386bdfb410538c714ec7871fda21537.tar.bz2 system_core-08ccc735a386bdfb410538c714ec7871fda21537.zip | |
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 770a6a4d46343dcb5b8ba5c584245c8fc369ac6a)
Diffstat (limited to 'adb')
| -rw-r--r-- | adb/daemon/usb.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/adb/daemon/usb.cpp b/adb/daemon/usb.cpp index 8c33ca580..3b29ab5fc 100644 --- a/adb/daemon/usb.cpp +++ b/adb/daemon/usb.cpp @@ -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) { |