diff options
Diffstat (limited to 'MdeModulePkg/Bus/Usb/UsbBusPei/UsbIoPeim.c')
| -rw-r--r-- | MdeModulePkg/Bus/Usb/UsbBusPei/UsbIoPeim.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/MdeModulePkg/Bus/Usb/UsbBusPei/UsbIoPeim.c b/MdeModulePkg/Bus/Usb/UsbBusPei/UsbIoPeim.c index 897b22896a..e647cc46df 100644 --- a/MdeModulePkg/Bus/Usb/UsbBusPei/UsbIoPeim.c +++ b/MdeModulePkg/Bus/Usb/UsbBusPei/UsbIoPeim.c @@ -1,7 +1,7 @@ /** @file
The module is used to implement Usb Io PPI interfaces.
-Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved. <BR>
+Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved. <BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions
@@ -24,7 +24,9 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. @param This The pointer of PEI_USB_IO_PPI.
@param Request USB device request to send.
@param Direction Specifies the data direction for the data stage.
- @param Timeout Indicates the maximum timeout, in millisecond.
+ @param Timeout Indicates the maximum timeout, in millisecond. If Timeout
+ is 0, then the caller must wait for the function to be
+ completed until EFI_SUCCESS or EFI_DEVICE_ERROR is returned.
@param Data Data buffer to be transmitted or received from USB device.
@param DataLength The size (in bytes) of the data buffer.
@@ -96,7 +98,9 @@ PeiUsbControlTransfer ( from or receive into.
@param DataLength The lenght of the data buffer.
@param Timeout Indicates the maximum time, in millisecond, which the
- transfer is allowed to complete.
+ transfer is allowed to complete. If Timeout is 0, then
+ the caller must wait for the function to be completed
+ until EFI_SUCCESS or EFI_DEVICE_ERROR is returned.
@retval EFI_SUCCESS The transfer was completed successfully.
@retval EFI_OUT_OF_RESOURCES The transfer failed due to lack of resource.
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