Merge "Zero-length packet send bug resolution for fastboot."
diff --git a/fastboot/usb_osx.cpp b/fastboot/usb_osx.cpp
index 610eebf..a4b9307 100644
--- a/fastboot/usb_osx.cpp
+++ b/fastboot/usb_osx.cpp
@@ -191,16 +191,30 @@
// Iterate over the endpoints for this interface and see if there
// are any that do bulk in/out.
- for (UInt8 endpoint = 1; endpoint <= interfaceNumEndpoints; endpoint++) {
+ for (UInt8 endpoint = 1; endpoint <= interfaceNumEndpoints; ++endpoint) {
UInt8 transferType;
- UInt16 maxPacketSize;
+ UInt16 endPointMaxPacketSize = 0;
UInt8 interval;
+
+ // Attempt to retrieve the 'true' packet-size from supported interface.
+ kr = (*interface)
+ ->GetEndpointProperties(interface, 0, endpoint,
+ kUSBOut,
+ &transferType,
+ &endPointMaxPacketSize, &interval);
+ if (kr == kIOReturnSuccess && !endPointMaxPacketSize) {
+ ERR("GetEndpointProperties() returned zero len packet-size");
+ }
+
+ UInt16 pipePropMaxPacketSize;
UInt8 number;
UInt8 direction;
+ // Proceed with extracting the transfer direction, so we can fill in the
+ // appropriate fields (bulkIn or bulkOut).
kr = (*interface)->GetPipeProperties(interface, endpoint,
&direction,
- &number, &transferType, &maxPacketSize, &interval);
+ &number, &transferType, &pipePropMaxPacketSize, &interval);
if (kr == 0) {
if (transferType != kUSBBulk) {
@@ -216,7 +230,8 @@
}
if (handle->info.ifc_protocol == 0x01) {
- handle->zero_mask = maxPacketSize - 1;
+ handle->zero_mask = (endPointMaxPacketSize == 0) ?
+ pipePropMaxPacketSize - 1 : endPointMaxPacketSize - 1;
}
} else {
ERR("could not get pipe properties for endpoint %u (%08x)\n", endpoint, kr);