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another small fix

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git-svn-id: svn://kolibrios.org@3700 a494cfbc-eb01-0410-851d-a64ba20cac60
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CleverMouse 2013-06-24 15:22:56 +00:00
parent 77ca8a319a
commit e787937c63
1 changed files with 4 additions and 2 deletions
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6
kernel/trunk/bus/usb/uhci.inc
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@ -1385,7 +1385,7 @@ end virtual
; 1. Initialize ErrorTD to zero.
and [edi+uhci_pipe.ErrorTD-sizeof.uhci_pipe], 0
; 2. Initialize HeadTD to the physical address of the first TD.
push eax ; store pointer to the first TD for step ?
push eax ; store pointer to the first TD for step 4
sub eax, sizeof.uhci_gtd
call get_phys_addr
mov [edi+uhci_pipe.HeadTD-sizeof.uhci_pipe], eax
@ -1416,7 +1416,8 @@ end virtual
; 4. Initialize the first TD:
; copy Token from uhci_pipe.Token zeroing reserved bit 20,
; set ControlStatus for future transfers, bit make it inactive,
; set bit 0 in NextTD = "no next TD".
; set bit 0 in NextTD = "no next TD",
; zero OrigBufferInfo.
pop edx ; restore pointer saved in step 2
mov [edx+uhci_gtd.Token-sizeof.uhci_gtd], eax
and byte [edx+uhci_gtd.Token+2-sizeof.uhci_gtd], not (1 shl (20-16))
@ -1424,6 +1425,7 @@ end virtual
shl eax, 6
or eax, UHCI_INVALID_LENGTH + (3 shl 27)
; not processed, inactive, allow 3 errors
and [edx+uhci_gtd.OrigBufferInfo-sizeof.uhci_gtd], 0
mov [edx+uhci_gtd.ControlStatus-sizeof.uhci_gtd], eax
mov [edx+uhci_gtd.NextTD-sizeof.uhci_gtd], 1
; 5. Select the corresponding list and insert to the list.