sravan/system76-edk2
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modify the implementation of GetInterface and GetConfiguration to force the high byte of output type parameters zero.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8447 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
eric_tian
2009-06-03 01:57:56 +00:00
parent 35c218d7e6
commit 134c1f33ed
1 changed files with 4 additions and 0 deletions
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4
MdePkg/Library/UefiUsbLib/UsbDxeLib.c
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@@ -177,6 +177,8 @@ UsbGetInterface (
ASSERT (AlternateSetting != NULL); ASSERT (AlternateSetting != NULL);
ASSERT (Status != NULL); ASSERT (Status != NULL);
*AlternateSetting = 0;
ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST)); ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
DevReq.RequestType = USB_DEV_GET_INTERFACE_REQ_TYPE; DevReq.RequestType = USB_DEV_GET_INTERFACE_REQ_TYPE;
@@ -283,6 +285,8 @@ UsbGetConfiguration (
ASSERT (ConfigurationValue != NULL); ASSERT (ConfigurationValue != NULL);
ASSERT (Status != NULL); ASSERT (Status != NULL);
*ConfigurationValue = 0;
ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST)); ZeroMem (&DevReq, sizeof (EFI_USB_DEVICE_REQUEST));
DevReq.RequestType = USB_DEV_GET_CONFIGURATION_REQ_TYPE; DevReq.RequestType = USB_DEV_GET_CONFIGURATION_REQ_TYPE;