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fix crash if disconnecting when reading/writing introduced in r4346

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git-svn-id: svn://kolibrios.org@4549 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
CleverMouse 2014-01-29 21:09:01 +00:00
parent 96d11ce70a
commit 437347b036
1 changed files with 18 additions and 5 deletions
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23
kernel/trunk/drivers/usbstor.asm
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@ -518,7 +518,7 @@ end virtual
jz .error
ret 20
.error:
DEBUGF 1, 'K : error %d while resetting', [.status]
DEBUGF 1, 'K : error %d while resetting', [.status+24h]
jmp request_callback1.common_error
endp
@ -562,7 +562,16 @@ end virtual
.error:
; Error.
; 7. Print debug message and complete the request as failed.
DEBUGF 1,'K : error %d after %d bytes in request stage\n',eax,[.length]
DEBUGF 1,'K : error %d after %d bytes in request stage\n',eax,[.length+24h]
; If device is disconnected and data stage is enqueued, do nothing;
; data stage callback will do everything.
cmp eax, 16
jnz .common_error
cmp [ecx+usb_device_data.Command.Flags], 0
js .common_error
cmp [ecx+usb_device_data.Command.Length], 0
jz .common_error
ret 20
.common_error:
; TODO: add recovery after STALL
mov ecx, [.calldata]
@ -623,8 +632,12 @@ end if
ret 20
.error:
; Error.
; 7. Print debug message and complete the request as failed.
DEBUGF 1,'K : error %d after %d bytes in data stage\n',eax,[.length]
; 5. Print debug message and complete the request as failed.
DEBUGF 1,'K : error %d after %d bytes in data stage\n',eax,[.length+24h]
; If device is disconnected and data stage is enqueued, do nothing;
; status stage callback will do everything.
cmp [ecx+usb_device_data.Command.Flags], 0
js .nothing
jmp request_callback1.common_error
endp
@ -707,7 +720,7 @@ end if
jmp .complete
.transfer_error:
; TODO: add recovery after STALL
DEBUGF 1,'K : error %d after %d bytes in status stage\n',eax,[.length]
DEBUGF 1,'K : error %d after %d bytes in status stage\n',eax,[.length+24h]
jmp request_callback1.common_error
endp