Microsoft KB Archive/140268

{|
 * width="100%"|

DOC: SCSI Miniport's Use of the SRB DataBuffer

 * }

Q140268

-

The information in this article applies to:


 * Microsoft Win32 Device Driver Kit (DDK) for Windows NT, versions 3.5, 3.51

-

SUMMARY
The Windows NT DDK documentation incorrectly states that SCSI miniports should not use the SRB DataBuffer as a data pointer unless the miniport sets MapBuffers to TRUE in the PORT_CONFIGURATION_INFORMATION structure for the HBA, nor should it be used for SRB_FUNCTION_IO_CONTROL requests. This information is incorrect with regard to SRB_FUNCTION_IO_CONTROL requests.

As a general rule, SCSI miniports should not use the SRB DataBuffer as a data pointer unless they set MapBuffers to TRUE. However, in the case of SRB_IO_FUNCTION_CONTROL requests, SCSI miniports can use SRB DataBuffer regardless of the value of MapBuffers.

This documentation error has been corrected in the Windows NT DDK version 4.0 online documentation.

Additional query words: 3.50 3.51 SCSI_REQUEST_BLOCK SRB

Keywords : kbdocfix

Issue type :

Technology : kbAudDeveloper kbWinDDKSearch kbWin32sSearch kbWin32DDKSearch kbWin32DDKNT350 kbWin32DDKNT351 kbWin32DDKNTSearch